18496949452864 has 63 divisors (see below), whose sum is σ = 36806828174487. Its totient is φ = 9222859113984.

The previous prime is 18496949452853. The next prime is 18496949452931. The reversal of 18496949452864 is 46825494969481.

The square root of 18496949452864 is 4300808.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2185690214464 + 16311259238400 = 1478408^2 + 4038720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21091161994 + ... + 21091162870.

It is an arithmetic number, because the mean of its divisors is an integer number (584235367849).

Almost surely, 2^{18496949452864} is an apocalyptic number.

18496949452864 is the 4300808-th square number.

It is an amenable number.

18496949452864 is a deficient number, since it is larger than the sum of its proper divisors (18309878721623).

18496949452864 is an frugal number, since it uses more digits than its factorization.

18496949452864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992 (or 1492 counting only the distinct ones).

The product of its digits is 4299816960, while the sum is 79.

The spelling of 18496949452864 in words is "eighteen trillion, four hundred ninety-six billion, nine hundred forty-nine million, four hundred fifty-two thousand, eight hundred sixty-four".