2143992650 has 48 divisors (see below), whose sum is σ = 4040466840. Its totient is φ = 846336000.

The previous prime is 2143992611. The next prime is 2143992659. The reversal of 2143992650 is 562993412.

It can be written as a sum of positive squares in 12 ways, for example, as 364924609 + 1779068041 = 19103^2 + 42179^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2143992598 and 2143992607.

It is not an unprimeable number, because it can be changed into a prime (2143992659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2307386 + ... + 2308314.

Almost surely, 2^2143992650 is an apocalyptic number.

2143992650 is a deficient number, since it is larger than the sum of its proper divisors (1896474190).

2143992650 is a wasteful number, since it uses less digits than its factorization.

2143992650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 2143992650 is about 46303.2682431813. The cubic root of 2143992650 is about 1289.4596719537.

The spelling of 2143992650 in words is "two billion, one hundred forty-three million, nine hundred ninety-two thousand, six hundred fifty".