19964111530 has 16 divisors (see below), whose sum is σ = 39202255584. Its totient is φ = 7259676880.

The previous prime is 19964111513. The next prime is 19964111539. The reversal of 19964111530 is 3511146991.

It is not an unprimeable number, because it can be changed into a prime (19964111539) 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 7 ways as a sum of consecutive naturals, for example, 90745852 + ... + 90746071.

It is an arithmetic number, because the mean of its divisors is an integer number (2450140974).

Almost surely, 2^19964111530 is an apocalyptic number.

19964111530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19964111530 is a deficient number, since it is larger than the sum of its proper divisors (19238144054).

19964111530 is a wasteful number, since it uses less digits than its factorization.

19964111530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181491941.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 19964111530 in words is "nineteen billion, nine hundred sixty-four million, one hundred eleven thousand, five hundred thirty".