38681657 has 8 divisors (see below), whose sum is σ = 44255232. Its totient is φ = 33120000.

The previous prime is 38681651. The next prime is 38681659. The reversal of 38681657 is 75618683.

38681657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38681657 - 2⁴ = 38681641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38681651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5657 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (5531904).

Almost surely, 2^38681657 is an apocalyptic number.

It is an amenable number.

38681657 is a deficient number, since it is larger than the sum of its proper divisors (5573575).

38681657 is a wasteful number, since it uses less digits than its factorization.

38681657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959.

The product of its digits is 241920, while the sum is 44.

The square root of 38681657 is about 6219.4579345792. The cubic root of 38681657 is about 338.1959142209.

The spelling of 38681657 in words is "thirty-eight million, six hundred eighty-one thousand, six hundred fifty-seven".