19135658377 has 12 divisors (see below), whose sum is σ = 21142416820. Its totient is φ = 17305896960.

The previous prime is 19135658369. The next prime is 19135658389. The reversal of 19135658377 is 77385653191.

It can be written as a sum of positive squares in 2 ways, for example, as 12394591561 + 6741066816 = 111331^2 + 82104^2 .

It is not a de Polignac number, because 19135658377 - 2³ = 19135658369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19135658357) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 386352 + ... + 433057.

Almost surely, 2^19135658377 is an apocalyptic number.

It is an amenable number.

19135658377 is a deficient number, since it is larger than the sum of its proper divisors (2006758443).

19135658377 is a wasteful number, since it uses less digits than its factorization.

19135658377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819624 (or 819613 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 55.

The spelling of 19135658377 in words is "nineteen billion, one hundred thirty-five million, six hundred fifty-eight thousand, three hundred seventy-seven".