18916077316 has 12 divisors (see below), whose sum is σ = 33156791388. Its totient is φ = 9442708352.

The previous prime is 18916077203. The next prime is 18916077317. The reversal of 18916077316 is 61377061981.

It can be written as a sum of positive squares in 2 ways, for example, as 175562500 + 18740514816 = 13250^2 + 136896^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18916077316.

It is not an unprimeable number, because it can be changed into a prime (18916077317) 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, 3829801 + ... + 3834736.

It is an arithmetic number, because the mean of its divisors is an integer number (2763065949).

Almost surely, 2^18916077316 is an apocalyptic number.

It is an amenable number.

18916077316 is a deficient number, since it is larger than the sum of its proper divisors (14240714072).

18916077316 is a wasteful number, since it uses less digits than its factorization.

18916077316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665158 (or 7665156 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 18916077316 in words is "eighteen billion, nine hundred sixteen million, seventy-seven thousand, three hundred sixteen".