38642937 has 4 divisors (see below), whose sum is σ = 51523920. Its totient is φ = 25761956.

The previous prime is 38642927. The next prime is 38642953. The reversal of 38642937 is 73924683.

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 38642937 - 2⁷ = 38642809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38642927) 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, 6440487 + ... + 6440492.

It is an arithmetic number, because the mean of its divisors is an integer number (12880980).

Almost surely, 2^38642937 is an apocalyptic number.

It is an amenable number.

38642937 is a deficient number, since it is larger than the sum of its proper divisors (12880983).

38642937 is a wasteful number, since it uses less digits than its factorization.

38642937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880982.

The product of its digits is 217728, while the sum is 42.

The square root of 38642937 is about 6216.3443437442. The cubic root of 38642937 is about 338.0830328316.

The spelling of 38642937 in words is "thirty-eight million, six hundred forty-two thousand, nine hundred thirty-seven".