38689424442 has 64 divisors (see below), whose sum is σ = 87011573760. Its totient is φ = 12741860592.

The previous prime is 38689424387. The next prime is 38689424453. The reversal of 38689424442 is 24442498683.

It is a happy number.

38689424442 is a `hidden beast` number, since 3 + 86 + 89 + 42 + 4 + 442 = 666.

It is a super-2 number, since 2×38689424442² (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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2204233 + ... + 2221715.

It is an arithmetic number, because the mean of its divisors is an integer number (1359555840).

Almost surely, 2^38689424442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38689424442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43505786880).

38689424442 is an abundant number, since it is smaller than the sum of its proper divisors (48322149318).

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

38689424442 is a wasteful number, since it uses less digits than its factorization.

38689424442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17984 (or 17978 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 54.

The spelling of 38689424442 in words is "thirty-eight billion, six hundred eighty-nine million, four hundred twenty-four thousand, four hundred forty-two".