19814403936 has 96 divisors (see below), whose sum is σ = 52412518368. Its totient is φ = 6554255360.

The previous prime is 19814403901. The next prime is 19814403949. The reversal of 19814403936 is 63930441891.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×19814403936³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 7227526 + ... + 7230266.

It is an arithmetic number, because the mean of its divisors is an integer number (545963733).

Almost surely, 2^19814403936 is an apocalyptic number.

19814403936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19814403936 is an abundant number, since it is smaller than the sum of its proper divisors (32598114432).

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

19814403936 is a wasteful number, since it uses less digits than its factorization.

19814403936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304 (or 3296 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 19814403936 in words is "nineteen billion, eight hundred fourteen million, four hundred three thousand, nine hundred thirty-six".