18907390348 has 24 divisors (see below), whose sum is σ = 41252488704. Its totient is φ = 7366515600.

The previous prime is 18907390321. The next prime is 18907390367. The reversal of 18907390348 is 84309370981.

It is a super-2 number, since 2×18907390348² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18907390295 and 18907390304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30693508 + ... + 30694123.

It is an arithmetic number, because the mean of its divisors is an integer number (1718853696).

Almost surely, 2^18907390348 is an apocalyptic number.

It is an amenable number.

18907390348 is an abundant number, since it is smaller than the sum of its proper divisors (22345098356).

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

18907390348 is a wasteful number, since it uses less digits than its factorization.

18907390348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61387653 (or 61387651 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 18907390348 in words is "eighteen billion, nine hundred seven million, three hundred ninety thousand, three hundred forty-eight".