38497661 has 2 divisors, whose sum is σ = 38497662. Its totient is φ = 38497660.

The previous prime is 38497621. The next prime is 38497681. The reversal of 38497661 is 16679483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33235225 + 5262436 = 5765^2 + 2294^2 .

It is an emirp because it is prime and its reverse (16679483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38497661 - 2¹⁸ = 38235517 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (38497621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19248830 + 19248831.

It is an arithmetic number, because the mean of its divisors is an integer number (19248831).

Almost surely, 2^38497661 is an apocalyptic number.

It is an amenable number.

38497661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38497661 is an equidigital number, since it uses as much as digits as its factorization.

38497661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 38497661 is about 6204.6483381413. The cubic root of 38497661 is about 337.6588326009.

The spelling of 38497661 in words is "thirty-eight million, four hundred ninety-seven thousand, six hundred sixty-one".