18958798404 has 72 divisors (see below), whose sum is σ = 58982938560. Its totient is φ = 5000121792.

The previous prime is 18958798403. The next prime is 18958798421. The reversal of 18958798404 is 40489785981.

18958798404 is a `hidden beast` number, since 1 + 8 + 9 + 587 + 9 + 8 + 40 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (18958798403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2890314 + ... + 2896865.

It is an arithmetic number, because the mean of its divisors is an integer number (819207480).

Almost surely, 2^18958798404 is an apocalyptic number.

18958798404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18958798404 is an abundant number, since it is smaller than the sum of its proper divisors (40024140156).

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

18958798404 is a wasteful number, since it uses less digits than its factorization.

18958798404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787209 (or 5787204 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 18958798404 in words is "eighteen billion, nine hundred fifty-eight million, seven hundred ninety-eight thousand, four hundred four".