618911056 has 10 divisors (see below), whose sum is σ = 1199140202. Its totient is φ = 309455520.

The previous prime is 618911039. The next prime is 618911077. The reversal of 618911056 is 650119816.

It can be written as a sum of positive squares in only one way, i.e., 612067600 + 6843456 = 24740^2 + 2616^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19340955 + ... + 19340986.

Almost surely, 2^618911056 is an apocalyptic number.

It is an amenable number.

618911056 is a deficient number, since it is larger than the sum of its proper divisors (580229146).

618911056 is a wasteful number, since it uses less digits than its factorization.

618911056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38681949 (or 38681943 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 618911056 is about 24877.9230644361. The cubic root of 618911056 is about 852.2023882384.

The spelling of 618911056 in words is "six hundred eighteen million, nine hundred eleven thousand, fifty-six".