38172334440 has 32 divisors (see below), whose sum is σ = 114517003680. Its totient is φ = 10179289152.

The previous prime is 38172334439. The next prime is 38172334457. The reversal of 38172334440 is 4443327183.

It is a happy number.

It is a super-2 number, since 2×38172334440² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 159051274 + ... + 159051513.

It is an arithmetic number, because the mean of its divisors is an integer number (3578656365).

Almost surely, 2^38172334440 is an apocalyptic number.

38172334440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38172334440 is an abundant number, since it is smaller than the sum of its proper divisors (76344669240).

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

38172334440 is a wasteful number, since it uses less digits than its factorization.

38172334440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318102801 (or 318102797 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 38172334440 in words is "thirty-eight billion, one hundred seventy-two million, three hundred thirty-four thousand, four hundred forty".