19017977116 has 12 divisors (see below), whose sum is σ = 35033115880. Its totient is φ = 9008515440.

The previous prime is 19017977113. The next prime is 19017977149. The reversal of 19017977116 is 61177971091.

It is a self number, because there is not a number n which added to its sum of digits gives 19017977116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19017977113) 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, 125118195 + ... + 125118346.

Almost surely, 2^19017977116 is an apocalyptic number.

It is an amenable number.

19017977116 is a deficient number, since it is larger than the sum of its proper divisors (16015138764).

19017977116 is a wasteful number, since it uses less digits than its factorization.

19017977116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250236564 (or 250236562 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 49.

The spelling of 19017977116 in words is "nineteen billion, seventeen million, nine hundred seventy-seven thousand, one hundred sixteen".