2143690000 has 75 divisors (see below), whose sum is σ = 5201321763. Its totient is φ = 855624000.

The previous prime is 2143689997. The next prime is 2143690001. The reversal of 2143690000 is 963412.

The square root of 2143690000 is 46300.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 168065296 + 1975624704 = 12964^2 + 44448^2 .

It is a super-2 number, since 2×2143690000² = 9190813632200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143690001) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4629769 + ... + 4630231.

Almost surely, 2^2143690000 is an apocalyptic number.

2143690000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2143690000 is the 46300-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143690000

2143690000 is an abundant number, since it is smaller than the sum of its proper divisors (3057631763).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143690000 is an frugal number, since it uses more digits than its factorization.

2143690000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The cubic root of 2143690000 is about 1289.3989949213.

Multiplying 2143690000 by its sum of digits (25), we get a square (53592250000 = 231500²).

2143690000 divided by its sum of digits (25) gives a square (85747600 = 9260²).

Multiplying 2143690000 by its product of nonzero digits (1296), we get a square (2778222240000 = 1666800²).

The spelling of 2143690000 in words is "two billion, one hundred forty-three million, six hundred ninety thousand".