18576089642 has 12 divisors (see below), whose sum is σ = 30627520098. Its totient is φ = 8443677000.

The previous prime is 18576089627. The next prime is 18576089659. The reversal of 18576089642 is 24698067581.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17771289481 + 804800161 = 133309^2 + 28369^2 .

It is a super-2 number, since 2×18576089642² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38380109 + ... + 38380592.

Almost surely, 2^18576089642 is an apocalyptic number.

18576089642 is a deficient number, since it is larger than the sum of its proper divisors (12051430456).

18576089642 is a wasteful number, since it uses less digits than its factorization.

18576089642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76760725 (or 76760714 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 18576089642 in words is "eighteen billion, five hundred seventy-six million, eighty-nine thousand, six hundred forty-two".