38994444181 has 16 divisors (see below), whose sum is σ = 48621121920. Its totient is φ = 30382361280.

The previous prime is 38994444169. The next prime is 38994444217. The reversal of 38994444181 is 18144449983.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38994444181 - 2⁹ = 38994443669 is a prime.

It is a super-2 number, since 2×38994444181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38994444121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144135 + ... + 1177723.

It is an arithmetic number, because the mean of its divisors is an integer number (3038820120).

Almost surely, 2^38994444181 is an apocalyptic number.

It is an amenable number.

38994444181 is a deficient number, since it is larger than the sum of its proper divisors (9626677739).

38994444181 is a wasteful number, since it uses less digits than its factorization.

38994444181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48684.

The product of its digits is 3981312, while the sum is 55.

The spelling of 38994444181 in words is "thirty-eight billion, nine hundred ninety-four million, four hundred forty-four thousand, one hundred eighty-one".