18869494577 has 8 divisors (see below), whose sum is σ = 19084377600. Its totient is φ = 18654675424.

The previous prime is 18869494517. The next prime is 18869494591. The reversal of 18869494577 is 77549496881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18869494577 - 2⁶ = 18869494513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18869494507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832448 + ... + 854814.

It is an arithmetic number, because the mean of its divisors is an integer number (2385547200).

Almost surely, 2^18869494577 is an apocalyptic number.

It is an amenable number.

18869494577 is a deficient number, since it is larger than the sum of its proper divisors (214883023).

18869494577 is an equidigital number, since it uses as much as digits as its factorization.

18869494577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31935.

The product of its digits is 121927680, while the sum is 68.

The spelling of 18869494577 in words is "eighteen billion, eight hundred sixty-nine million, four hundred ninety-four thousand, five hundred seventy-seven".