38840670387 has 6 divisors (see below), whose sum is σ = 56103190572. Its totient is φ = 25893780252.

The previous prime is 38840670367. The next prime is 38840670437. The reversal of 38840670387 is 78307604883.

It is not a de Polignac number, because 38840670387 - 2⁷ = 38840670259 is a prime.

It is a super-3 number, since 3×38840670387³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (38840670317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2157815013 + ... + 2157815030.

It is an arithmetic number, because the mean of its divisors is an integer number (9350531762).

Almost surely, 2^38840670387 is an apocalyptic number.

38840670387 is a deficient number, since it is larger than the sum of its proper divisors (17262520185).

38840670387 is a wasteful number, since it uses less digits than its factorization.

38840670387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315630049 (or 4315630046 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 38840670387 in words is "thirty-eight billion, eight hundred forty million, six hundred seventy thousand, three hundred eighty-seven".