385751569 has 12 divisors (see below), whose sum is σ = 463208448. Its totient is φ = 319977000.

The previous prime is 385751557. The next prime is 385751593. The reversal of 385751569 is 965157583.

It is not a de Polignac number, because 385751569 - 2⁵ = 385751537 is a prime.

It is a super-2 number, since 2×385751569² = 297608545971923522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (385751599) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125457 + ... + 128494.

It is an arithmetic number, because the mean of its divisors is an integer number (38600704).

Almost surely, 2^385751569 is an apocalyptic number.

It is an amenable number.

385751569 is a deficient number, since it is larger than the sum of its proper divisors (77456879).

385751569 is a wasteful number, since it uses less digits than its factorization.

385751569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253996 (or 253989 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 49.

The square root of 385751569 is about 19640.5592842974. The cubic root of 385751569 is about 727.9517041432.

The spelling of 385751569 in words is "three hundred eighty-five million, seven hundred fifty-one thousand, five hundred sixty-nine".