18378634041 has 24 divisors (see below), whose sum is σ = 26701671360. Its totient is φ = 12181125600.

The previous prime is 18378634037. The next prime is 18378634121. The reversal of 18378634041 is 14043687381.

18378634041 is a `hidden beast` number, since 1 + 8 + 3 + 7 + 8 + 634 + 0 + 4 + 1 = 666.

It is not a de Polignac number, because 18378634041 - 2² = 18378634037 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18378634031) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1934140 + ... + 1943618.

It is an arithmetic number, because the mean of its divisors is an integer number (1112569640).

Almost surely, 2^18378634041 is an apocalyptic number.

It is an amenable number.

18378634041 is a deficient number, since it is larger than the sum of its proper divisors (8323037319).

18378634041 is a wasteful number, since it uses less digits than its factorization.

18378634041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10717 (or 10714 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 18378634041 in words is "eighteen billion, three hundred seventy-eight million, six hundred thirty-four thousand, forty-one".