38194544940 has 24 divisors (see below), whose sum is σ = 106944726000. Its totient is φ = 10185211968.

The previous prime is 38194544903. The next prime is 38194544951. The reversal of 38194544940 is 4944549183.

It is a super-4 number, since 4×38194544940⁴ (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318287815 + ... + 318287934.

It is an arithmetic number, because the mean of its divisors is an integer number (4456030250).

Almost surely, 2^38194544940 is an apocalyptic number.

38194544940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38194544940 is an abundant number, since it is smaller than the sum of its proper divisors (68750181060).

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

38194544940 is a wasteful number, since it uses less digits than its factorization.

38194544940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636575761 (or 636575759 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 38194544940 in words is "thirty-eight billion, one hundred ninety-four million, five hundred forty-four thousand, nine hundred forty".