18790658047 has 18 divisors (see below), whose sum is σ = 21666984248. Its totient is φ = 15963590832.

The previous prime is 18790658039. The next prime is 18790658071. The reversal of 18790658047 is 74085609781.

It is not a de Polignac number, because 18790658047 - 2³ = 18790658039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18790658947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 71447238 + ... + 71447500.

Almost surely, 2^18790658047 is an apocalyptic number.

18790658047 is a deficient number, since it is larger than the sum of its proper divisors (2876326201).

18790658047 is an frugal number, since it uses more digits than its factorization.

18790658047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 18790658047 in words is "eighteen billion, seven hundred ninety million, six hundred fifty-eight thousand, forty-seven".