19964901103 has 4 divisors (see below), whose sum is σ = 22817029840. Its totient is φ = 17112772368.

The previous prime is 19964901079. The next prime is 19964901109. The reversal of 19964901103 is 30110946991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19964901103 - 2⁹ = 19964900591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19964901103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19964901109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426064358 + ... + 1426064371.

It is an arithmetic number, because the mean of its divisors is an integer number (5704257460).

Almost surely, 2^19964901103 is an apocalyptic number.

19964901103 is a deficient number, since it is larger than the sum of its proper divisors (2852128737).

19964901103 is an equidigital number, since it uses as much as digits as its factorization.

19964901103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852128736.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 19964901103 in words is "nineteen billion, nine hundred sixty-four million, nine hundred one thousand, one hundred three".