38649637 has 8 divisors (see below), whose sum is σ = 43432704. Its totient is φ = 34125168.

The previous prime is 38649623. The next prime is 38649641. The reversal of 38649637 is 73694683.

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 38649637 - 2⁷ = 38649509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38649607) 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, 64333 + ... + 64930.

It is an arithmetic number, because the mean of its divisors is an integer number (5429088).

Almost surely, 2^38649637 is an apocalyptic number.

It is an amenable number.

38649637 is a deficient number, since it is larger than the sum of its proper divisors (4783067).

38649637 is a wasteful number, since it uses less digits than its factorization.

38649637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129299.

The product of its digits is 653184, while the sum is 46.

The square root of 38649637 is about 6216.8832223229. The cubic root of 38649637 is about 338.1025709033.

The spelling of 38649637 in words is "thirty-eight million, six hundred forty-nine thousand, six hundred thirty-seven".