38037661 has 2 divisors, whose sum is σ = 38037662. Its totient is φ = 38037660.

The previous prime is 38037641. The next prime is 38037667. The reversal of 38037661 is 16673083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32604100 + 5433561 = 5710^2 + 2331^2 .

It is a cyclic number.

It is not a de Polignac number, because 38037661 - 2⁷ = 38037533 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38037667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19018830 + 19018831.

It is an arithmetic number, because the mean of its divisors is an integer number (19018831).

Almost surely, 2^38037661 is an apocalyptic number.

It is an amenable number.

38037661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38037661 is an equidigital number, since it uses as much as digits as its factorization.

38037661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 38037661 is about 6167.4679569496. The cubic root of 38037661 is about 336.3085701099.

The spelling of 38037661 in words is "thirty-eight million, thirty-seven thousand, six hundred sixty-one".