385196017891 has 2 divisors, whose sum is σ = 385196017892. Its totient is φ = 385196017890.

The previous prime is 385196017813. The next prime is 385196017901. The reversal of 385196017891 is 198710691583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385196017891 - 2⁹ = 385196017379 is a prime.

It is not a weakly prime, because it can be changed into another prime (385196017991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192598008945 + 192598008946.

It is an arithmetic number, because the mean of its divisors is an integer number (192598008946).

Almost surely, 2^385196017891 is an apocalyptic number.

385196017891 is a deficient number, since it is larger than the sum of its proper divisors (1).

385196017891 is an equidigital number, since it uses as much as digits as its factorization.

385196017891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 385196017891 in words is "three hundred eighty-five billion, one hundred ninety-six million, seventeen thousand, eight hundred ninety-one".