19364948964 has 81 divisors (see below), whose sum is σ = 50889651267. Its totient is φ = 6447468456.

The previous prime is 19364948957. The next prime is 19364948983. The reversal of 19364948964 is 46984946391.

The square root of 19364948964 is 139158.

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

19364948964 is a `hidden beast` number, since 1 + 9 + 3 + 6 + 494 + 89 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

Its product of digits (40310784) is a multiple of the sum of its prime divisors (864).

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 26 ways as a sum of consecutive naturals, for example, 22543167 + ... + 22544025.

Almost surely, 2^19364948964 is an apocalyptic number.

19364948964 is the 139158-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19364948964

19364948964 is an abundant number, since it is smaller than the sum of its proper divisors (31524702303).

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

19364948964 is an frugal number, since it uses more digits than its factorization.

19364948964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 864 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 63.

The spelling of 19364948964 in words is "nineteen billion, three hundred sixty-four million, nine hundred forty-eight thousand, nine hundred sixty-four".