18927656672 has 24 divisors (see below), whose sum is σ = 37369409616. Its totient is φ = 9437012992.

The previous prime is 18927656669. The next prime is 18927656677. The reversal of 18927656672 is 27665672981.

It is a super-2 number, since 2×18927656672² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18927656677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826508 + ... + 849099.

It is an arithmetic number, because the mean of its divisors is an integer number (1557058734).

Almost surely, 2^18927656672 is an apocalyptic number.

It is an amenable number.

18927656672 is a deficient number, since it is larger than the sum of its proper divisors (18441752944).

18927656672 is a wasteful number, since it uses less digits than its factorization.

18927656672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675970 (or 1675962 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 59.

The spelling of 18927656672 in words is "eighteen billion, nine hundred twenty-seven million, six hundred fifty-six thousand, six hundred seventy-two".