18786440955 has 8 divisors (see below), whose sum is σ = 30058305552. Its totient is φ = 10019435168.

The previous prime is 18786440929. The next prime is 18786440977. The reversal of 18786440955 is 55904468781.

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 18786440955 - 2⁶ = 18786440891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18786440895 and 18786440904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626214684 + ... + 626214713.

It is an arithmetic number, because the mean of its divisors is an integer number (3757288194).

Almost surely, 2^18786440955 is an apocalyptic number.

18786440955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18786440955 is a deficient number, since it is larger than the sum of its proper divisors (11271864597).

18786440955 is a wasteful number, since it uses less digits than its factorization.

18786440955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252429405.

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 18786440955 in words is "eighteen billion, seven hundred eighty-six million, four hundred forty thousand, nine hundred fifty-five".