2507278164 has 24 divisors (see below), whose sum is σ = 5864916288. Its totient is φ = 833673600.

The previous prime is 2507278153. The next prime is 2507278183. The reversal of 2507278164 is 4618727052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255712 + ... + 265335.

It is an arithmetic number, because the mean of its divisors is an integer number (244371512).

Almost surely, 2^2507278164 is an apocalyptic number.

It is an amenable number.

2507278164 is an abundant number, since it is smaller than the sum of its proper divisors (3357638124).

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

2507278164 is a wasteful number, since it uses less digits than its factorization.

2507278164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521455 (or 521453 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 2507278164 is about 50072.7287452961. The cubic root of 2507278164 is about 1358.5245973571.

The spelling of 2507278164 in words is "two billion, five hundred seven million, two hundred seventy-eight thousand, one hundred sixty-four".