38926438091 has 2 divisors, whose sum is σ = 38926438092. Its totient is φ = 38926438090.

The previous prime is 38926438009. The next prime is 38926438093. The reversal of 38926438091 is 19083462983.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38926438091 - 2¹⁴ = 38926421707 is a prime.

It is a Sophie Germain prime.

Together with 38926438093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38926438093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19463219045 + 19463219046.

It is an arithmetic number, because the mean of its divisors is an integer number (19463219046).

Almost surely, 2^38926438091 is an apocalyptic number.

38926438091 is a deficient number, since it is larger than the sum of its proper divisors (1).

38926438091 is an equidigital number, since it uses as much as digits as its factorization.

38926438091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 38926438091 in words is "thirty-eight billion, nine hundred twenty-six million, four hundred thirty-eight thousand, ninety-one".