18870792193 has 8 divisors (see below), whose sum is σ = 20768499936. Its totient is φ = 17003448000.

The previous prime is 18870792181. The next prime is 18870792209. The reversal of 18870792193 is 39129707881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-18870792193 is a prime.

It is a super-2 number, since 2×18870792193² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18870792113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7589583 + ... + 7592068.

It is an arithmetic number, because the mean of its divisors is an integer number (2596062492).

Almost surely, 2^18870792193 is an apocalyptic number.

It is an amenable number.

18870792193 is a deficient number, since it is larger than the sum of its proper divisors (1897707743).

18870792193 is a wasteful number, since it uses less digits than its factorization.

18870792193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15181775.

The product of its (nonzero) digits is 1524096, while the sum is 55.

It can be divided in two parts, 188707 and 92193, that added together give a square (280900 = 530²).

The spelling of 18870792193 in words is "eighteen billion, eight hundred seventy million, seven hundred ninety-two thousand, one hundred ninety-three".