38857123 has 2 divisors, whose sum is σ = 38857124. Its totient is φ = 38857122.

The previous prime is 38857103. The next prime is 38857139. The reversal of 38857123 is 32175883.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38857123 is a prime.

It is not a weakly prime, because it can be changed into another prime (38857103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19428561 + 19428562.

It is an arithmetic number, because the mean of its divisors is an integer number (19428562).

Almost surely, 2^38857123 is an apocalyptic number.

38857123 is a deficient number, since it is larger than the sum of its proper divisors (1).

38857123 is an equidigital number, since it uses as much as digits as its factorization.

38857123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 38857123 is about 6233.5481870280. The cubic root of 38857123 is about 338.7065126657.

The spelling of 38857123 in words is "thirty-eight million, eight hundred fifty-seven thousand, one hundred twenty-three".