18963493264 has 45 divisors (see below), whose sum is σ = 37142014593. Its totient is φ = 9379567296.

The previous prime is 18963493247. The next prime is 18963493277. The reversal of 18963493264 is 46239436981.

The square root of 18963493264 is 137708.

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

It can be written as a sum of positive squares in only one way, i.e., 17250195600 + 1713297664 = 131340^2 + 41392^2 .

It is a super-2 number, since 2×18963493264² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 95293837 + ... + 95294035.

Almost surely, 2^18963493264 is an apocalyptic number.

18963493264 is the 137708-th square number.

It is an amenable number.

18963493264 is a deficient number, since it is larger than the sum of its proper divisors (18178521329).

18963493264 is an frugal number, since it uses more digits than its factorization.

18963493264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 374 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 55.

The spelling of 18963493264 in words is "eighteen billion, nine hundred sixty-three million, four hundred ninety-three thousand, two hundred sixty-four".