38750647644 has 48 divisors (see below), whose sum is σ = 100682699040. Its totient is φ = 12888846720.

The previous prime is 38750647643. The next prime is 38750647657. The reversal of 38750647644 is 44674605783.

38750647644 is a `hidden beast` number, since 3 + 87 + 50 + 6 + 476 + 44 = 666.

It is a super-2 number, since 2×38750647644² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38750647643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339369 + ... + 438944.

It is an arithmetic number, because the mean of its divisors is an integer number (2097556230).

Almost surely, 2^38750647644 is an apocalyptic number.

It is an amenable number.

38750647644 is an abundant number, since it is smaller than the sum of its proper divisors (61932051396).

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

38750647644 is a wasteful number, since it uses less digits than its factorization.

38750647644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778787 (or 778779 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 38750647644 in words is "thirty-eight billion, seven hundred fifty million, six hundred forty-seven thousand, six hundred forty-four".