2139558930 has 48 divisors (see below), whose sum is σ = 5742307584. Its totient is φ = 552143520.

The previous prime is 2139558917. The next prime is 2139558931. The reversal of 2139558930 is 398559312.

2139558930 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 558 + 93 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2139558931) 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, 380644 + ... + 386223.

It is an arithmetic number, because the mean of its divisors is an integer number (119631408).

Almost surely, 2^2139558930 is an apocalyptic number.

2139558930 is an abundant number, since it is smaller than the sum of its proper divisors (3602748654).

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

2139558930 is a wasteful number, since it uses less digits than its factorization.

2139558930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766911 (or 766908 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 2139558930 is about 46255.3664994668. The cubic root of 2139558930 is about 1288.5702023917.

The spelling of 2139558930 in words is "two billion, one hundred thirty-nine million, five hundred fifty-eight thousand, nine hundred thirty".