213838931874 has 32 divisors (see below), whose sum is σ = 429454872000. Its totient is φ = 70984077824.

The previous prime is 213838931857. The next prime is 213838931879. The reversal of 213838931874 is 478139838312.

213838931874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213838931879) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1355722 + ... + 1505210.

It is an arithmetic number, because the mean of its divisors is an integer number (13420464750).

Almost surely, 2^213838931874 is an apocalyptic number.

213838931874 is an abundant number, since it is smaller than the sum of its proper divisors (215615940126).

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

213838931874 is a wasteful number, since it uses less digits than its factorization.

213838931874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150482.

The product of its digits is 6967296, while the sum is 57.

The spelling of 213838931874 in words is "two hundred thirteen billion, eight hundred thirty-eight million, nine hundred thirty-one thousand, eight hundred seventy-four".