38295778686 has 64 divisors (see below), whose sum is σ = 85486046976. Its totient is φ = 11338329600.

The previous prime is 38295778673. The next prime is 38295778699. The reversal of 38295778686 is 68687759283.

It is an interprime number because it is at equal distance from previous prime (38295778673) and next prime (38295778699).

It is a self number, because there is not a number n which added to its sum of digits gives 38295778686.

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, 820305 + ... + 865731.

It is an arithmetic number, because the mean of its divisors is an integer number (1335719484).

Almost surely, 2^38295778686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38295778686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42743023488).

38295778686 is an abundant number, since it is smaller than the sum of its proper divisors (47190268290).

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

38295778686 is a wasteful number, since it uses less digits than its factorization.

38295778686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45737.

The product of its digits is 243855360, while the sum is 69.

The spelling of 38295778686 in words is "thirty-eight billion, two hundred ninety-five million, seven hundred seventy-eight thousand, six hundred eighty-six".