18356977670 has 32 divisors (see below), whose sum is σ = 35284619520. Its totient is φ = 6860891520.

The previous prime is 18356977663. The next prime is 18356977679. The reversal of 18356977670 is 7677965381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18356977679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011977 + ... + 1029956.

It is an arithmetic number, because the mean of its divisors is an integer number (1102644360).

Almost surely, 2^18356977670 is an apocalyptic number.

18356977670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18356977670 is a deficient number, since it is larger than the sum of its proper divisors (16927641850).

18356977670 is a wasteful number, since it uses less digits than its factorization.

18356977670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042000.

The product of its (nonzero) digits is 13335840, while the sum is 59.

The spelling of 18356977670 in words is "eighteen billion, three hundred fifty-six million, nine hundred seventy-seven thousand, six hundred seventy".