18860719899 has 24 divisors (see below), whose sum is σ = 29933682240. Its totient is φ = 10526909904.

The previous prime is 18860719897. The next prime is 18860719931. The reversal of 18860719899 is 99891706881.

It is not a de Polignac number, because 18860719899 - 2¹ = 18860719897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18860719897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1485589 + ... + 1498230.

It is an arithmetic number, because the mean of its divisors is an integer number (1247236760).

Almost surely, 2^18860719899 is an apocalyptic number.

18860719899 is a deficient number, since it is larger than the sum of its proper divisors (11072962341).

18860719899 is a wasteful number, since it uses less digits than its factorization.

18860719899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983879 (or 2983872 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 66.

The spelling of 18860719899 in words is "eighteen billion, eight hundred sixty million, seven hundred nineteen thousand, eight hundred ninety-nine".