38642593 has 4 divisors (see below), whose sum is σ = 42155568. Its totient is φ = 35129620.

The previous prime is 38642563. The next prime is 38642621. The reversal of 38642593 is 39524683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38642593 - 2⁹ = 38642081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38642503) 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, 1756471 + ... + 1756492.

It is an arithmetic number, because the mean of its divisors is an integer number (10538892).

Almost surely, 2^38642593 is an apocalyptic number.

It is an amenable number.

38642593 is a deficient number, since it is larger than the sum of its proper divisors (3512975).

38642593 is a wasteful number, since it uses less digits than its factorization.

38642593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512974.

The product of its digits is 155520, while the sum is 40.

The square root of 38642593 is about 6216.3166746877. The cubic root of 38642593 is about 338.0820296219.

The spelling of 38642593 in words is "thirty-eight million, six hundred forty-two thousand, five hundred ninety-three".