38813907 has 32 divisors (see below), whose sum is σ = 61205760. Its totient is φ = 21611520.

The previous prime is 38813899. The next prime is 38813911. The reversal of 38813907 is 70931883.

It is not a de Polignac number, because 38813907 - 2³ = 38813899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38813927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23319 + ... + 24927.

It is an arithmetic number, because the mean of its divisors is an integer number (1912680).

Almost surely, 2^38813907 is an apocalyptic number.

38813907 is a deficient number, since it is larger than the sum of its proper divisors (22391853).

38813907 is a wasteful number, since it uses less digits than its factorization.

38813907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 38813907 is about 6230.0808180954. The cubic root of 38813907 is about 338.5808988838.

The spelling of 38813907 in words is "thirty-eight million, eight hundred thirteen thousand, nine hundred seven".