18536965 has 16 divisors (see below), whose sum is σ = 23328000. Its totient is φ = 14113792.

The previous prime is 18536929. The next prime is 18537019. The reversal of 18536965 is 56963581.

It is a cyclic number.

It is not a de Polignac number, because 18536965 - 2¹⁵ = 18504197 is a prime.

It is a super-2 number, since 2×18536965² = 687238142822450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 41061 + ... + 41509.

It is an arithmetic number, because the mean of its divisors is an integer number (1458000).

Almost surely, 2^18536965 is an apocalyptic number.

It is an amenable number.

18536965 is a deficient number, since it is larger than the sum of its proper divisors (4791035).

18536965 is a wasteful number, since it uses less digits than its factorization.

18536965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its digits is 194400, while the sum is 43.

The square root of 18536965 is about 4305.4575831147. The cubic root of 18536965 is about 264.6546587351.

The spelling of 18536965 in words is "eighteen million, five hundred thirty-six thousand, nine hundred sixty-five".