38198818944 has 512 divisors, whose sum is σ = 136094112000. Its totient is φ = 10391224320.

The previous prime is 38198818939. The next prime is 38198818979. The reversal of 38198818944 is 44981889183.

38198818944 is a `hidden beast` number, since 381 + 98 + 81 + 8 + 94 + 4 = 666.

It is a super-4 number, since 4×38198818944⁴ (a number of 43 digits) contains 4444 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18284652 + ... + 18286740.

Almost surely, 2^38198818944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38198818944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68047056000).

38198818944 is an abundant number, since it is smaller than the sum of its proper divisors (97895293056).

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

38198818944 is a wasteful number, since it uses less digits than its factorization.

38198818944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173 (or 2155 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 63.

The spelling of 38198818944 in words is "thirty-eight billion, one hundred ninety-eight million, eight hundred eighteen thousand, nine hundred forty-four".