385613069 has 4 divisors (see below), whose sum is σ = 385655580. Its totient is φ = 385570560.

The previous prime is 385612991. The next prime is 385613071. The reversal of 385613069 is 960316583.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 960316583 = 293 ⋅3277531.

It can be written as a sum of positive squares in 2 ways, for example, as 79887844 + 305725225 = 8938^2 + 17485^2 .

It is a cyclic number.

It is not a de Polignac number, because 385613069 - 2²⁰ = 384564493 is a prime.

It is a super-2 number, since 2×385613069² = 297394877967197522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385613089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574 + ... + 27815.

It is an arithmetic number, because the mean of its divisors is an integer number (96413895).

Almost surely, 2^385613069 is an apocalyptic number.

It is an amenable number.

385613069 is a deficient number, since it is larger than the sum of its proper divisors (42511).

385613069 is a wasteful number, since it uses less digits than its factorization.

385613069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42510.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 385613069 is about 19637.0331007512. The cubic root of 385613069 is about 727.8645726076.

The spelling of 385613069 in words is "three hundred eighty-five million, six hundred thirteen thousand, sixty-nine".