38016491 has 4 divisors (see below), whose sum is σ = 38029992. Its totient is φ = 38002992.

The previous prime is 38016487. The next prime is 38016497. The reversal of 38016491 is 19461083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19461083 = 769 ⋅25307.

It is a cyclic number.

It is not a de Polignac number, because 38016491 - 2² = 38016487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38016497) 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, 746 + ... + 8751.

It is an arithmetic number, because the mean of its divisors is an integer number (9507498).

Almost surely, 2^38016491 is an apocalyptic number.

38016491 is a deficient number, since it is larger than the sum of its proper divisors (13501).

38016491 is an equidigital number, since it uses as much as digits as its factorization.

38016491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13500.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 38016491 is about 6165.7514546079. The cubic root of 38016491 is about 336.2461672748.

The spelling of 38016491 in words is "thirty-eight million, sixteen thousand, four hundred ninety-one".