38449940992 has 20 divisors (see below), whose sum is σ = 76824785466. Its totient is φ = 19224970240.

The previous prime is 38449940951. The next prime is 38449941017. The reversal of 38449940992 is 29904994483.

It can be written as a sum of positive squares in only one way, i.e., 26995804416 + 11454136576 = 164304^2 + 107024^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38449940992.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37548259 + ... + 37549282.

Almost surely, 2^38449940992 is an apocalyptic number.

38449940992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38449940992 is a deficient number, since it is larger than the sum of its proper divisors (38374844474).

38449940992 is an frugal number, since it uses more digits than its factorization.

38449940992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75097559 (or 75097543 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 38449940992 in words is "thirty-eight billion, four hundred forty-nine million, nine hundred forty thousand, nine hundred ninety-two".