2139510492 has 36 divisors (see below), whose sum is σ = 6180808816. Its totient is φ = 611288640.

The previous prime is 2139510487. The next prime is 2139510511. The reversal of 2139510492 is 2940159312.

2139510492 is a `hidden beast` number, since 2 + 139 + 510 + 4 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4244809 + ... + 4245312.

Almost surely, 2^2139510492 is an apocalyptic number.

It is an amenable number.

2139510492 is an abundant number, since it is smaller than the sum of its proper divisors (4041298324).

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

2139510492 is a wasteful number, since it uses less digits than its factorization.

2139510492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490138 (or 8490133 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2139510492 is about 46254.8429032031. The cubic root of 2139510492 is about 1288.5604782325.

The spelling of 2139510492 in words is "two billion, one hundred thirty-nine million, five hundred ten thousand, four hundred ninety-two".