18708485945 has 32 divisors (see below), whose sum is σ = 24504681600. Its totient is φ = 13657641984.

The previous prime is 18708485921. The next prime is 18708485969. The reversal of 18708485945 is 54958480781.

It is an interprime number because it is at equal distance from previous prime (18708485921) and next prime (18708485969).

It is a cyclic number.

It is not a de Polignac number, because 18708485945 - 2¹² = 18708481849 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1185074 + ... + 1200756.

It is an arithmetic number, because the mean of its divisors is an integer number (765771300).

Almost surely, 2^18708485945 is an apocalyptic number.

It is an amenable number.

18708485945 is a deficient number, since it is larger than the sum of its proper divisors (5796195655).

18708485945 is a wasteful number, since it uses less digits than its factorization.

18708485945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16169.

The product of its (nonzero) digits is 12902400, while the sum is 59.

The spelling of 18708485945 in words is "eighteen billion, seven hundred eight million, four hundred eighty-five thousand, nine hundred forty-five".