18386050777 has 16 divisors (see below), whose sum is σ = 19430871040. Its totient is φ = 17349076368.

The previous prime is 18386050759. The next prime is 18386050831. The reversal of 18386050777 is 77705068381.

It is a cyclic number.

It is not a de Polignac number, because 18386050777 - 2²³ = 18377662169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18386050717) 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, 9252178 + ... + 9254164.

It is an arithmetic number, because the mean of its divisors is an integer number (1214429440).

Almost surely, 2^18386050777 is an apocalyptic number.

It is an amenable number.

18386050777 is a deficient number, since it is larger than the sum of its proper divisors (1044820263).

18386050777 is a wasteful number, since it uses less digits than its factorization.

18386050777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 18386050777 in words is "eighteen billion, three hundred eighty-six million, fifty thousand, seven hundred seventy-seven".