38844981840 has 160 divisors (see below), whose sum is σ = 138275721216. Its totient is φ = 8836692480.

The previous prime is 38844981829. The next prime is 38844981859. The reversal of 38844981840 is 4818944883.

It is a super-2 number, since 2×38844981840² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299689 + ... + 409271.

Almost surely, 2^38844981840 is an apocalyptic number.

38844981840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38844981840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69137860608).

38844981840 is an abundant number, since it is smaller than the sum of its proper divisors (99430739376).

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

38844981840 is a wasteful number, since it uses less digits than its factorization.

38844981840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109817 (or 109811 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 57.

The spelling of 38844981840 in words is "thirty-eight billion, eight hundred forty-four million, nine hundred eighty-one thousand, eight hundred forty".