18697150404 has 192 divisors, whose sum is σ = 51247687680. Its totient is φ = 5887365120.

The previous prime is 18697150397. The next prime is 18697150427. The reversal of 18697150404 is 40405179681.

18697150404 is a `hidden beast` number, since 1 + 8 + 6 + 97 + 150 + 404 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18697150404.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27617314 + ... + 27617990.

It is an arithmetic number, because the mean of its divisors is an integer number (266915040).

Almost surely, 2^18697150404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18697150404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25623843840).

18697150404 is an abundant number, since it is smaller than the sum of its proper divisors (32550537276).

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

18697150404 is a wasteful number, since it uses less digits than its factorization.

18697150404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 18697150404 in words is "eighteen billion, six hundred ninety-seven million, one hundred fifty thousand, four hundred four".