18371970456 has 64 divisors (see below), whose sum is σ = 53481772800. Its totient is φ = 5150091648.

The previous prime is 18371970439. The next prime is 18371970493. The reversal of 18371970456 is 65407917381.

It is a happy number.

It is a super-2 number, since 2×18371970456² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18371970399 and 18371970408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022766 + ... + 1040573.

It is an arithmetic number, because the mean of its divisors is an integer number (835652700).

Almost surely, 2^18371970456 is an apocalyptic number.

It is an amenable number.

18371970456 is an abundant number, since it is smaller than the sum of its proper divisors (35109802344).

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

18371970456 is a wasteful number, since it uses less digits than its factorization.

18371970456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063408 (or 2063404 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 18371970456 in words is "eighteen billion, three hundred seventy-one million, nine hundred seventy thousand, four hundred fifty-six".