38181405966 has 32 divisors (see below), whose sum is σ = 84716841600. Its totient is φ = 11374018080.

The previous prime is 38181405953. The next prime is 38181405971. The reversal of 38181405966 is 66950418183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4898701 + ... + 4906488.

It is an arithmetic number, because the mean of its divisors is an integer number (2647401300).

Almost surely, 2^38181405966 is an apocalyptic number.

38181405966 is an abundant number, since it is smaller than the sum of its proper divisors (46535435634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38181405966 is a wasteful number, since it uses less digits than its factorization.

38181405966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9805264.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 38181405966 in words is "thirty-eight billion, one hundred eighty-one million, four hundred five thousand, nine hundred sixty-six".