2031538878 has 24 divisors (see below), whose sum is σ = 4457388000. Its totient is φ = 668607264.

The previous prime is 2031538877. The next prime is 2031538891. The reversal of 2031538878 is 8788351302.

2031538878 is a `hidden beast` number, since 2 + 0 + 31 + 538 + 87 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031538877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712903 + ... + 715746.

It is an arithmetic number, because the mean of its divisors is an integer number (185724500).

Almost surely, 2^2031538878 is an apocalyptic number.

2031538878 is an abundant number, since it is smaller than the sum of its proper divisors (2425849122).

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

2031538878 is a wasteful number, since it uses less digits than its factorization.

2031538878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428736 (or 1428733 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2031538878 is about 45072.5956430290. The cubic root of 2031538878 is about 1266.5092887421.

The spelling of 2031538878 in words is "two billion, thirty-one million, five hundred thirty-eight thousand, eight hundred seventy-eight".