1864979055 has 24 divisors (see below), whose sum is σ = 3239962128. Its totient is φ = 992399616.

The previous prime is 1864979027. The next prime is 1864979057. The reversal of 1864979055 is 5509794681.

1864979055 is a `hidden beast` number, since 18 + 6 + 497 + 90 + 55 = 666.

It is not a de Polignac number, because 1864979055 - 2⁵ = 1864979023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1864978992 and 1864979010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864979057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26842 + ... + 66711.

It is an arithmetic number, because the mean of its divisors is an integer number (134998422).

Almost surely, 2^1864979055 is an apocalyptic number.

1864979055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1864979055 is a deficient number, since it is larger than the sum of its proper divisors (1374983073).

1864979055 is a wasteful number, since it uses less digits than its factorization.

1864979055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94007 (or 94004 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 1864979055 is about 43185.4032631397. The cubic root of 1864979055 is about 1230.9053318877.

The spelling of 1864979055 in words is "one billion, eight hundred sixty-four million, nine hundred seventy-nine thousand, fifty-five".