18616980946 has 16 divisors (see below), whose sum is σ = 28612207008. Its totient is φ = 9079668000.

The previous prime is 18616980917. The next prime is 18616981003. The reversal of 18616980946 is 64908961681.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460381 + ... + 499183.

It is an arithmetic number, because the mean of its divisors is an integer number (1788262938).

Almost surely, 2^18616980946 is an apocalyptic number.

18616980946 is a deficient number, since it is larger than the sum of its proper divisors (9995226062).

18616980946 is a wasteful number, since it uses less digits than its factorization.

18616980946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44697.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 18616980946 in words is "eighteen billion, six hundred sixteen million, nine hundred eighty thousand, nine hundred forty-six".