38049974864 has 160 divisors (see below), whose sum is σ = 87763906560. Its totient is φ = 15788390400.

The previous prime is 38049974861. The next prime is 38049974873. The reversal of 38049974864 is 46847994083.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 38049974797 and 38049974806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38049974861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29336264 + ... + 29337560.

It is an arithmetic number, because the mean of its divisors is an integer number (548524416).

Almost surely, 2^38049974864 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 38049974864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43881953280).

38049974864 is an abundant number, since it is smaller than the sum of its proper divisors (49713931696).

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

38049974864 is a wasteful number, since it uses less digits than its factorization.

38049974864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 38049974864 in words is "thirty-eight billion, forty-nine million, nine hundred seventy-four thousand, eight hundred sixty-four".