18974933061 has 64 divisors (see below), whose sum is σ = 31018401792. Its totient is φ = 10071309312.

The previous prime is 18974933051. The next prime is 18974933063. The reversal of 18974933061 is 16033947981.

It is not a de Polignac number, because 18974933061 - 2⁹ = 18974932549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 18974932995 and 18974933013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18974933063) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12108300 + ... + 12109866.

It is an arithmetic number, because the mean of its divisors is an integer number (484662528).

Almost surely, 2^18974933061 is an apocalyptic number.

It is an amenable number.

18974933061 is a deficient number, since it is larger than the sum of its proper divisors (12043468731).

18974933061 is a wasteful number, since it uses less digits than its factorization.

18974933061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 18974933061 in words is "eighteen billion, nine hundred seventy-four million, nine hundred thirty-three thousand, sixty-one".