19494302884 has 27 divisors (see below), whose sum is σ = 39688810497. Its totient is φ = 8353863504.

The previous prime is 19494302881. The next prime is 19494302897. The reversal of 19494302884 is 48820349491.

The square root of 19494302884 is 139622.

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., 2366822500 + 17127480384 = 48650^2 + 130872^2 .

It is not an unprimeable number, because it can be changed into a prime (19494302881) by changing a digit.

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, 1949722 + ... + 1959694.

Almost surely, 2^19494302884 is an apocalyptic number.

19494302884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19494302884 is the 139622-nd square number.

It is an amenable number.

19494302884 is an abundant number, since it is smaller than the sum of its proper divisors (20194507613).

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

19494302884 is an frugal number, since it uses more digits than its factorization.

19494302884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19964 (or 9982 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 19494302884 in words is "nineteen billion, four hundred ninety-four million, three hundred two thousand, eight hundred eighty-four".