38309641 has 2 divisors, whose sum is σ = 38309642. Its totient is φ = 38309640.

The previous prime is 38309611. The next prime is 38309657. The reversal of 38309641 is 14690383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 129600 = 6179^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 38309641 - 2²⁵ = 4755209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38309597 and 38309606.

It is not a weakly prime, because it can be changed into another prime (38309611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19154820 + 19154821.

It is an arithmetic number, because the mean of its divisors is an integer number (19154821).

Almost surely, 2^38309641 is an apocalyptic number.

It is an amenable number.

38309641 is a deficient number, since it is larger than the sum of its proper divisors (1).

38309641 is an equidigital number, since it uses as much as digits as its factorization.

38309641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 38309641 is about 6189.4782494165. The cubic root of 38309641 is about 337.1082342166.

The spelling of 38309641 in words is "thirty-eight million, three hundred nine thousand, six hundred forty-one".