2637978652 has 12 divisors (see below), whose sum is σ = 4817178576. Its totient is φ = 1261641920.

The previous prime is 2637978647. The next prime is 2637978653. The reversal of 2637978652 is 2568797362.

2637978652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2637978593 and 2637978602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2637978653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14336749 + ... + 14336932.

It is an arithmetic number, because the mean of its divisors is an integer number (401431548).

Almost surely, 2^2637978652 is an apocalyptic number.

It is an amenable number.

2637978652 is a deficient number, since it is larger than the sum of its proper divisors (2179199924).

2637978652 is a wasteful number, since it uses less digits than its factorization.

2637978652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28673708 (or 28673706 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 55.

The square root of 2637978652 is about 51361.2563319863. The cubic root of 2637978652 is about 1381.7318193176.

The spelling of 2637978652 in words is "two billion, six hundred thirty-seven million, nine hundred seventy-eight thousand, six hundred fifty-two".