38243957 has 2 divisors, whose sum is σ = 38243958. Its totient is φ = 38243956.

The previous prime is 38243951. The next prime is 38243971. The reversal of 38243957 is 75934283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30184036 + 8059921 = 5494^2 + 2839^2 .

It is a cyclic number.

It is not a de Polignac number, because 38243957 - 2⁶ = 38243893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38243951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19121978 + 19121979.

It is an arithmetic number, because the mean of its divisors is an integer number (19121979).

Almost surely, 2^38243957 is an apocalyptic number.

It is an amenable number.

38243957 is a deficient number, since it is larger than the sum of its proper divisors (1).

38243957 is an equidigital number, since it uses as much as digits as its factorization.

38243957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 38243957 is about 6184.1698715349. The cubic root of 38243957 is about 336.9154604251.

The spelling of 38243957 in words is "thirty-eight million, two hundred forty-three thousand, nine hundred fifty-seven".