18534403375 has 32 divisors (see below), whose sum is σ = 24155688960. Its totient is φ = 14171652000.

The previous prime is 18534403333. The next prime is 18534403441. The reversal of 18534403375 is 57330443581.

It is not a de Polignac number, because 18534403375 - 2⁷ = 18534403247 is a prime.

It is a super-2 number, since 2×18534403375² (a number of 21 digits) 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6815266 + ... + 6817984.

It is an arithmetic number, because the mean of its divisors is an integer number (754865280).

Almost surely, 2^18534403375 is an apocalyptic number.

18534403375 is a deficient number, since it is larger than the sum of its proper divisors (5621285585).

18534403375 is a wasteful number, since it uses less digits than its factorization.

18534403375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5118 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 18534403375 in words is "eighteen billion, five hundred thirty-four million, four hundred three thousand, three hundred seventy-five".