38665994284 has 24 divisors (see below), whose sum is σ = 71727063408. Its totient is φ = 18175127040.

The previous prime is 38665994281. The next prime is 38665994287. The reversal of 38665994284 is 48249956683.

It is an interprime number because it is at equal distance from previous prime (38665994281) and next prime (38665994287).

It is a super-2 number, since 2×38665994284² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38665994281) 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, 261937 + ... + 382024.

It is an arithmetic number, because the mean of its divisors is an integer number (2988627642).

Almost surely, 2^38665994284 is an apocalyptic number.

38665994284 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

38665994284 is a deficient number, since it is larger than the sum of its proper divisors (33061069124).

38665994284 is a wasteful number, since it uses less digits than its factorization.

38665994284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644865 (or 644863 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 64.

The spelling of 38665994284 in words is "thirty-eight billion, six hundred sixty-five million, nine hundred ninety-four thousand, two hundred eighty-four".