2144662500 has 72 divisors (see below), whose sum is σ = 6254974656. Its totient is φ = 571900000.

The previous prime is 2144662483. The next prime is 2144662511. The reversal of 2144662500 is 52664412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8905 + ... + 66095.

It is an arithmetic number, because the mean of its divisors is an integer number (86874648).

Almost surely, 2^2144662500 is an apocalyptic number.

2144662500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2144662500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3127487328).

2144662500 is an abundant number, since it is smaller than the sum of its proper divisors (4110312156).

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

2144662500 is an equidigital number, since it uses as much as digits as its factorization.

2144662500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57223 (or 57201 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2144662500 is about 46310.5009690027. The cubic root of 2144662500 is about 1289.5939470756.

The spelling of 2144662500 in words is "two billion, one hundred forty-four million, six hundred sixty-two thousand, five hundred".