18936995 has 32 divisors (see below), whose sum is σ = 28670976. Its totient is φ = 11664000.

The previous prime is 18936991. The next prime is 18937033. The reversal of 18936995 is 59963981.

It is not a de Polignac number, because 18936995 - 2² = 18936991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18936991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38642 + ... + 39128.

It is an arithmetic number, because the mean of its divisors is an integer number (895968).

Almost surely, 2^18936995 is an apocalyptic number.

18936995 is a deficient number, since it is larger than the sum of its proper divisors (9733981).

18936995 is a wasteful number, since it uses less digits than its factorization.

18936995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611.

The product of its digits is 524880, while the sum is 50.

The square root of 18936995 is about 4351.6657730115. The cubic root of 18936995 is about 266.5448862345.

It can be divided in two parts, 1893 and 6995, that added together give a palindrome (8888).

The spelling of 18936995 in words is "eighteen million, nine hundred thirty-six thousand, nine hundred ninety-five".