19316549616 has 80 divisors (see below), whose sum is σ = 61416735744. Its totient is φ = 5094473472.

The previous prime is 19316549573. The next prime is 19316549627. The reversal of 19316549616 is 61694561391.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2206776 + ... + 2215511.

Almost surely, 2^19316549616 is an apocalyptic number.

19316549616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19316549616 is an abundant number, since it is smaller than the sum of its proper divisors (42100186128).

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

19316549616 is a wasteful number, since it uses less digits than its factorization.

19316549616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422318 (or 4422312 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The spelling of 19316549616 in words is "nineteen billion, three hundred sixteen million, five hundred forty-nine thousand, six hundred sixteen".