38415385 has 4 divisors (see below), whose sum is σ = 46098468. Its totient is φ = 30732304.

The previous prime is 38415379. The next prime is 38415389. The reversal of 38415385 is 58351483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58351483 = 23 ⋅2537021.

It can be written as a sum of positive squares in 2 ways, for example, as 8088336 + 30327049 = 2844^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 38415385 - 2⁵ = 38415353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38415389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3841534 + ... + 3841543.

It is an arithmetic number, because the mean of its divisors is an integer number (11524617).

Almost surely, 2^38415385 is an apocalyptic number.

It is an amenable number.

38415385 is a deficient number, since it is larger than the sum of its proper divisors (7683083).

38415385 is an equidigital number, since it uses as much as digits as its factorization.

38415385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7683082.

The product of its digits is 57600, while the sum is 37.

The square root of 38415385 is about 6198.0146014672. The cubic root of 38415385 is about 337.4181163949.

The spelling of 38415385 in words is "thirty-eight million, four hundred fifteen thousand, three hundred eighty-five".