385740791 has 2 divisors, whose sum is σ = 385740792. Its totient is φ = 385740790.

The previous prime is 385740769. The next prime is 385740821. The reversal of 385740791 is 197047583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385740791 - 2¹⁸ = 385478647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385740701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192870395 + 192870396.

It is an arithmetic number, because the mean of its divisors is an integer number (192870396).

Almost surely, 2^385740791 is an apocalyptic number.

385740791 is a deficient number, since it is larger than the sum of its proper divisors (1).

385740791 is an equidigital number, since it uses as much as digits as its factorization.

385740791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 385740791 is about 19640.2849011922. The cubic root of 385740791 is about 727.9449243596.

The spelling of 385740791 in words is "three hundred eighty-five million, seven hundred forty thousand, seven hundred ninety-one".