38735491 has 4 divisors (see below), whose sum is σ = 38754072. Its totient is φ = 38716912.

The previous prime is 38735467. The next prime is 38735497. The reversal of 38735491 is 19453783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19453783 = 151 ⋅128833.

It is a cyclic number.

It is not a de Polignac number, because 38735491 - 2⁷ = 38735363 is a prime.

It is a super-2 number, since 2×38735491² = 3000876526022162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38735497) 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, 5701 + ... + 10486.

It is an arithmetic number, because the mean of its divisors is an integer number (9688518).

Almost surely, 2^38735491 is an apocalyptic number.

38735491 is a deficient number, since it is larger than the sum of its proper divisors (18581).

38735491 is a wasteful number, since it uses less digits than its factorization.

38735491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580.

The product of its digits is 90720, while the sum is 40.

The square root of 38735491 is about 6223.7842989615. The cubic root of 38735491 is about 338.3527327295.

The spelling of 38735491 in words is "thirty-eight million, seven hundred thirty-five thousand, four hundred ninety-one".