385308765 has 64 divisors (see below), whose sum is σ = 738017280. Its totient is φ = 190175040.

The previous prime is 385308743. The next prime is 385308817. The reversal of 385308765 is 567803583.

385308765 is a `hidden beast` number, since 38 + 530 + 87 + 6 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-385308765 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 385308765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94254 + ... + 98256.

It is an arithmetic number, because the mean of its divisors is an integer number (11531520).

Almost surely, 2^385308765 is an apocalyptic number.

It is an amenable number.

385308765 is a deficient number, since it is larger than the sum of its proper divisors (352708515).

385308765 is a wasteful number, since it uses less digits than its factorization.

385308765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071 (or 4065 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 385308765 is about 19629.2833542134. The cubic root of 385308765 is about 727.6730590523.

The spelling of 385308765 in words is "three hundred eighty-five million, three hundred eight thousand, seven hundred sixty-five".