18755612394 has 16 divisors (see below), whose sum is σ = 37546525632. Its totient is φ = 6245987328.

The previous prime is 18755612363. The next prime is 18755612399. The reversal of 18755612394 is 49321655781.

It is a super-2 number, since 2×18755612394² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18755612399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463959 + ... + 1476714.

It is an arithmetic number, because the mean of its divisors is an integer number (2346657852).

Almost surely, 2^18755612394 is an apocalyptic number.

18755612394 is an abundant number, since it is smaller than the sum of its proper divisors (18790913238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18755612394 is a wasteful number, since it uses less digits than its factorization.

18755612394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941741.

The product of its digits is 1814400, while the sum is 51.

The spelling of 18755612394 in words is "eighteen billion, seven hundred fifty-five million, six hundred twelve thousand, three hundred ninety-four".