636190051 has 16 divisors (see below), whose sum is σ = 764250624. Its totient is φ = 517771584.

The previous prime is 636190043. The next prime is 636190057. The reversal of 636190051 is 150091636.

It is not a de Polignac number, because 636190051 - 2³ = 636190043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636189995 and 636190022.

It is not an unprimeable number, because it can be changed into a prime (636190057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7636 + ... + 36478.

It is an arithmetic number, because the mean of its divisors is an integer number (47765664).

Almost surely, 2^636190051 is an apocalyptic number.

636190051 is a deficient number, since it is larger than the sum of its proper divisors (128060573).

636190051 is a wasteful number, since it uses less digits than its factorization.

636190051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29010.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 636190051 is about 25222.8081505609. The cubic root of 636190051 is about 860.0604117468.

The spelling of 636190051 in words is "six hundred thirty-six million, one hundred ninety thousand, fifty-one".