38738491 has 8 divisors (see below), whose sum is σ = 42649200. Its totient is φ = 34892640.

The previous prime is 38738443. The next prime is 38738503. The reversal of 38738491 is 19483783.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38738491 - 2⁷ = 38738363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38738411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14956 + ... + 17353.

It is an arithmetic number, because the mean of its divisors is an integer number (5331150).

Almost surely, 2^38738491 is an apocalyptic number.

38738491 is a deficient number, since it is larger than the sum of its proper divisors (3910709).

38738491 is a wasteful number, since it uses less digits than its factorization.

38738491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32429.

The product of its digits is 145152, while the sum is 43.

The square root of 38738491 is about 6224.0253052185. The cubic root of 38738491 is about 338.3614674580.

The spelling of 38738491 in words is "thirty-eight million, seven hundred thirty-eight thousand, four hundred ninety-one".