385851769 has 2 divisors, whose sum is σ = 385851770. Its totient is φ = 385851768.

The previous prime is 385851743. The next prime is 385851787. The reversal of 385851769 is 967158583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214241769 + 171610000 = 14637^2 + 13100^2 .

It is a cyclic number.

It is not a de Polignac number, because 385851769 - 2²⁷ = 251634041 is a prime.

It is a super-2 number, since 2×385851769² = 297763175280858722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385851709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192925884 + 192925885.

It is an arithmetic number, because the mean of its divisors is an integer number (192925885).

Almost surely, 2^385851769 is an apocalyptic number.

It is an amenable number.

385851769 is a deficient number, since it is larger than the sum of its proper divisors (1).

385851769 is an equidigital number, since it uses as much as digits as its factorization.

385851769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 52.

The square root of 385851769 is about 19643.1099625288. The cubic root of 385851769 is about 728.0147278196.

The spelling of 385851769 in words is "three hundred eighty-five million, eight hundred fifty-one thousand, seven hundred sixty-nine".