18378966045 has 32 divisors (see below), whose sum is σ = 32825700864. Its totient is φ = 8703777600.

The previous prime is 18378966037. The next prime is 18378966049. The reversal of 18378966045 is 54066987381.

It is not a de Polignac number, because 18378966045 - 2³ = 18378966037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18378966049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288111 + ... + 1302300.

It is an arithmetic number, because the mean of its divisors is an integer number (1025803152).

Almost surely, 2^18378966045 is an apocalyptic number.

18378966045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18378966045 is a deficient number, since it is larger than the sum of its proper divisors (14446734819).

18378966045 is a wasteful number, since it uses less digits than its factorization.

18378966045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590473.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 18378966045 in words is "eighteen billion, three hundred seventy-eight million, nine hundred sixty-six thousand, forty-five".