38779818769 has 8 divisors (see below), whose sum is σ = 39607780608. Its totient is φ = 37951976160.

The previous prime is 38779818743. The next prime is 38779818809. The reversal of 38779818769 is 96781897783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38779818769 - 2¹⁷ = 38779687697 is a prime.

It is a super-2 number, since 2×38779818769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38779818569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010989 + ... + 1048645.

It is an arithmetic number, because the mean of its divisors is an integer number (4950972576).

Almost surely, 2^38779818769 is an apocalyptic number.

It is an amenable number.

38779818769 is a deficient number, since it is larger than the sum of its proper divisors (827961839).

38779818769 is a wasteful number, since it uses less digits than its factorization.

38779818769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59615.

The product of its digits is 256048128, while the sum is 73.

The spelling of 38779818769 in words is "thirty-eight billion, seven hundred seventy-nine million, eight hundred eighteen thousand, seven hundred sixty-nine".