38125643 has 2 divisors, whose sum is σ = 38125644. Its totient is φ = 38125642.

The previous prime is 38125631. The next prime is 38125657. The reversal of 38125643 is 34652183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38125643 - 2⁶ = 38125579 is a prime.

It is not a weakly prime, because it can be changed into another prime (38125663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19062821 + 19062822.

It is an arithmetic number, because the mean of its divisors is an integer number (19062822).

Almost surely, 2^38125643 is an apocalyptic number.

38125643 is a deficient number, since it is larger than the sum of its proper divisors (1).

38125643 is an equidigital number, since it uses as much as digits as its factorization.

38125643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 38125643 is about 6174.5965860127. The cubic root of 38125643 is about 336.5676669776.

The spelling of 38125643 in words is "thirty-eight million, one hundred twenty-five thousand, six hundred forty-three".