38364581 has 2 divisors, whose sum is σ = 38364582. Its totient is φ = 38364580.

The previous prime is 38364539. The next prime is 38364611. The reversal of 38364581 is 18546383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38328481 + 36100 = 6191^2 + 190^2 .

It is an emirp because it is prime and its reverse (18546383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38364581 - 2¹⁰ = 38363557 is a prime.

It is a super-2 number, since 2×38364581² = 2943682150611122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38364481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19182290 + 19182291.

It is an arithmetic number, because the mean of its divisors is an integer number (19182291).

Almost surely, 2^38364581 is an apocalyptic number.

It is an amenable number.

38364581 is a deficient number, since it is larger than the sum of its proper divisors (1).

38364581 is an equidigital number, since it uses as much as digits as its factorization.

38364581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 38364581 is about 6193.9148363535. The cubic root of 38364581 is about 337.2693066377.

The spelling of 38364581 in words is "thirty-eight million, three hundred sixty-four thousand, five hundred eighty-one".