19157770616 has 8 divisors (see below), whose sum is σ = 35920819920. Its totient is φ = 9578885304.

The previous prime is 19157770601. The next prime is 19157770651. The reversal of 19157770616 is 61607775191.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1197360656 + ... + 1197360671.

It is an arithmetic number, because the mean of its divisors is an integer number (4490102490).

Almost surely, 2^19157770616 is an apocalyptic number.

It is an amenable number.

19157770616 is a deficient number, since it is larger than the sum of its proper divisors (16763049304).

19157770616 is a wasteful number, since it uses less digits than its factorization.

19157770616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394721333 (or 2394721329 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 50.

The spelling of 19157770616 in words is "nineteen billion, one hundred fifty-seven million, seven hundred seventy thousand, six hundred sixteen".