38491373 has 2 divisors, whose sum is σ = 38491374. Its totient is φ = 38491372.

The previous prime is 38491357. The next prime is 38491379. The reversal of 38491373 is 37319483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38464804 + 26569 = 6202^2 + 163^2 .

It is a cyclic number.

It is not a de Polignac number, because 38491373 - 2⁴ = 38491357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38491379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19245686 + 19245687.

It is an arithmetic number, because the mean of its divisors is an integer number (19245687).

Almost surely, 2^38491373 is an apocalyptic number.

It is an amenable number.

38491373 is a deficient number, since it is larger than the sum of its proper divisors (1).

38491373 is an equidigital number, since it uses as much as digits as its factorization.

38491373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 38491373 is about 6204.1416005762. The cubic root of 38491373 is about 337.6404478100.

The spelling of 38491373 in words is "thirty-eight million, four hundred ninety-one thousand, three hundred seventy-three".