18438760348 has 24 divisors (see below), whose sum is σ = 32365872000. Its totient is φ = 9191401968.

The previous prime is 18438760321. The next prime is 18438760363. The reversal of 18438760348 is 84306783481.

It is a super-2 number, since 2×18438760348² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18438760295 and 18438760304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2924103 + ... + 2930401.

It is an arithmetic number, because the mean of its divisors is an integer number (1348578000).

Almost surely, 2^18438760348 is an apocalyptic number.

It is an amenable number.

18438760348 is a deficient number, since it is larger than the sum of its proper divisors (13927111652).

18438760348 is a wasteful number, since it uses less digits than its factorization.

18438760348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409 (or 8407 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 18438760348 in words is "eighteen billion, four hundred thirty-eight million, seven hundred sixty thousand, three hundred forty-eight".