38948092891 has 2 divisors, whose sum is σ = 38948092892. Its totient is φ = 38948092890.

The previous prime is 38948092867. The next prime is 38948092949. The reversal of 38948092891 is 19829084983.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38948092891 is a prime.

It is not a weakly prime, because it can be changed into another prime (38948092801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19474046445 + 19474046446.

It is an arithmetic number, because the mean of its divisors is an integer number (19474046446).

Almost surely, 2^38948092891 is an apocalyptic number.

38948092891 is a deficient number, since it is larger than the sum of its proper divisors (1).

38948092891 is an equidigital number, since it uses as much as digits as its factorization.

38948092891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 38948092891 in words is "thirty-eight billion, nine hundred forty-eight million, ninety-two thousand, eight hundred ninety-one".