2807504138 has 16 divisors (see below), whose sum is σ = 4295797224. Its totient is φ = 1375738560.

The previous prime is 2807504137. The next prime is 2807504179. The reversal of 2807504138 is 8314057082.

2807504138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1150769929 + 1656734209 = 33923^2 + 40703^2 .

It is not an unprimeable number, because it can be changed into a prime (2807504137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7745 + ... + 75332.

Almost surely, 2^2807504138 is an apocalyptic number.

2807504138 is a deficient number, since it is larger than the sum of its proper divisors (1488293086).

2807504138 is a wasteful number, since it uses less digits than its factorization.

2807504138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83417.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2807504138 is about 52985.8862151045. The cubic root of 2807504138 is about 1410.7177637608.

The spelling of 2807504138 in words is "two billion, eight hundred seven million, five hundred four thousand, one hundred thirty-eight".