2138912630 has 32 divisors (see below), whose sum is σ = 4133954880. Its totient is φ = 793891840.

The previous prime is 2138912609. The next prime is 2138912683. The reversal of 2138912630 is 362198312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76535 + ... + 100674.

It is an arithmetic number, because the mean of its divisors is an integer number (129186090).

Almost surely, 2^2138912630 is an apocalyptic number.

2138912630 is a deficient number, since it is larger than the sum of its proper divisors (1995042250).

2138912630 is a wasteful number, since it uses less digits than its factorization.

2138912630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177304.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2138912630 is about 46248.3797554033. The cubic root of 2138912630 is about 1288.4404425021.

The spelling of 2138912630 in words is "two billion, one hundred thirty-eight million, nine hundred twelve thousand, six hundred thirty".