38481709 has 6 divisors (see below), whose sum is σ = 44764494. Its totient is φ = 32984280.

The previous prime is 38481697. The next prime is 38481713. The reversal of 38481709 is 90718483.

It can be written as a sum of positive squares in only one way, i.e., 38378025 + 103684 = 6195^2 + 322^2 .

It is not a de Polignac number, because 38481709 - 2¹⁵ = 38448941 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 (38481719) 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, 392622 + ... + 392719.

It is an arithmetic number, because the mean of its divisors is an integer number (7460749).

Almost surely, 2^38481709 is an apocalyptic number.

It is an amenable number.

38481709 is a deficient number, since it is larger than the sum of its proper divisors (6282785).

38481709 is an equidigital number, since it uses as much as digits as its factorization.

38481709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785355 (or 785348 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 38481709 is about 6203.3627171076. The cubic root of 38481709 is about 337.6121884006.

The spelling of 38481709 in words is "thirty-eight million, four hundred eighty-one thousand, seven hundred nine".