18967748616 has 80 divisors (see below), whose sum is σ = 53151069840. Its totient is φ = 6319749600.

The previous prime is 18967748609. The next prime is 18967748617. The reversal of 18967748616 is 61684776981.

18967748616 is a `hidden beast` number, since 1 + 8 + 9 + 6 + 7 + 7 + 4 + 8 + 616 = 666.

It is not an unprimeable number, because it can be changed into a prime (18967748617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1842315 + ... + 1852581.

It is an arithmetic number, because the mean of its divisors is an integer number (664388373).

Almost surely, 2^18967748616 is an apocalyptic number.

It is an amenable number.

18967748616 is an abundant number, since it is smaller than the sum of its proper divisors (34183321224).

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

18967748616 is a wasteful number, since it uses less digits than its factorization.

18967748616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13136 (or 13123 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 18967748616 in words is "eighteen billion, nine hundred sixty-seven million, seven hundred forty-eight thousand, six hundred sixteen".