2139532900 has 18 divisors (see below), whose sum is σ = 4642786610. Its totient is φ = 855813120.

The previous prime is 2139532877. The next prime is 2139532931. The reversal of 2139532900 is 92359312.

It can be written as a sum of positive squares in 3 ways, for example, as 277955584 + 1861577316 = 16672^2 + 43146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10697565 + ... + 10697764.

Almost surely, 2^2139532900 is an apocalyptic number.

2139532900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2139532900 is an abundant number, since it is smaller than the sum of its proper divisors (2503253710).

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

2139532900 is a wasteful number, since it uses less digits than its factorization.

2139532900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21395343 (or 21395336 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 2139532900 is about 46255.0851258540. The cubic root of 2139532900 is about 1288.5649767635.

The spelling of 2139532900 in words is "two billion, one hundred thirty-nine million, five hundred thirty-two thousand, nine hundred".