38543921164 has 96 divisors (see below), whose sum is σ = 79768080000. Its totient is φ = 16287731712.

The previous prime is 38543921153. The next prime is 38543921191. The reversal of 38543921164 is 46112934583.

It is a happy number.

It is a super-2 number, since 2×38543921164² (a number of 22 digits) contains 22 as substring.

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, 67739472 + ... + 67740040.

It is an arithmetic number, because the mean of its divisors is an integer number (830917500).

Almost surely, 2^38543921164 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 38543921164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39884040000).

38543921164 is an abundant number, since it is smaller than the sum of its proper divisors (41224158836).

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

38543921164 is a wasteful number, since it uses less digits than its factorization.

38543921164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200 (or 1184 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The spelling of 38543921164 in words is "thirty-eight billion, five hundred forty-three million, nine hundred twenty-one thousand, one hundred sixty-four".