18809159877 has 128 divisors (see below), whose sum is σ = 31352832000. Its totient is φ = 11098114560.

The previous prime is 18809159861. The next prime is 18809159879. The reversal of 18809159877 is 77895190881.

It is not a de Polignac number, because 18809159877 - 2⁴ = 18809159861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18809159879) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 52393024 + ... + 52393382.

It is an arithmetic number, because the mean of its divisors is an integer number (244944000).

Almost surely, 2^18809159877 is an apocalyptic number.

It is an amenable number.

18809159877 is a deficient number, since it is larger than the sum of its proper divisors (12543672123).

18809159877 is a wasteful number, since it uses less digits than its factorization.

18809159877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 63.

The spelling of 18809159877 in words is "eighteen billion, eight hundred nine million, one hundred fifty-nine thousand, eight hundred seventy-seven".