18945332575 has 12 divisors (see below), whose sum is σ = 25299306088. Its totient is φ = 13990399200.

The previous prime is 18945332551. The next prime is 18945332587. The reversal of 18945332575 is 57523354981.

It is not a de Polignac number, because 18945332575 - 2¹³ = 18945324383 is a prime.

It is a super-2 number, since 2×18945332575² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29146341 + ... + 29146990.

Almost surely, 2^18945332575 is an apocalyptic number.

18945332575 is a deficient number, since it is larger than the sum of its proper divisors (6353973513).

18945332575 is a wasteful number, since it uses less digits than its factorization.

18945332575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58293354 (or 58293349 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 52.

The spelling of 18945332575 in words is "eighteen billion, nine hundred forty-five million, three hundred thirty-two thousand, five hundred seventy-five".