18010693564 has 24 divisors (see below), whose sum is σ = 31910851728. Its totient is φ = 8893392000.

The previous prime is 18010693543. The next prime is 18010693567. The reversal of 18010693564 is 46539601081.

It is a super-2 number, since 2×18010693564² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18010693564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18010693567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987294 + ... + 1005370.

It is an arithmetic number, because the mean of its divisors is an integer number (1329618822).

Almost surely, 2^18010693564 is an apocalyptic number.

It is an amenable number.

18010693564 is a deficient number, since it is larger than the sum of its proper divisors (13900158164).

18010693564 is a wasteful number, since it uses less digits than its factorization.

18010693564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21165 (or 21163 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 18010693564 in words is "eighteen billion, ten million, six hundred ninety-three thousand, five hundred sixty-four".