38043857 has 2 divisors, whose sum is σ = 38043858. Its totient is φ = 38043856.

The previous prime is 38043827. The next prime is 38043893. The reversal of 38043857 is 75834083.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37405456 + 638401 = 6116^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 38043857 - 2⁸ = 38043601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38043857.

It is not a weakly prime, because it can be changed into another prime (38043827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19021928 + 19021929.

It is an arithmetic number, because the mean of its divisors is an integer number (19021929).

Almost surely, 2^38043857 is an apocalyptic number.

It is an amenable number.

38043857 is a deficient number, since it is larger than the sum of its proper divisors (1).

38043857 is an equidigital number, since it uses as much as digits as its factorization.

38043857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 38043857 is about 6167.9702496040. The cubic root of 38043857 is about 336.3268296866.

The spelling of 38043857 in words is "thirty-eight million, forty-three thousand, eight hundred fifty-seven".