18088911604 has 6 divisors (see below), whose sum is σ = 31655595314. Its totient is φ = 9044455800.

The previous prime is 18088911569. The next prime is 18088911623. The reversal of 18088911604 is 40611988081.

It can be written as a sum of positive squares in only one way, i.e., 17718272100 + 370639504 = 133110^2 + 19252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2261113947 + ... + 2261113954.

Almost surely, 2^18088911604 is an apocalyptic number.

It is an amenable number.

18088911604 is a deficient number, since it is larger than the sum of its proper divisors (13566683710).

18088911604 is a wasteful number, since it uses less digits than its factorization.

18088911604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522227905 (or 4522227903 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 18088911604 in words is "eighteen billion, eighty-eight million, nine hundred eleven thousand, six hundred four".