385918398 has 32 divisors (see below), whose sum is σ = 865624320. Its totient is φ = 127435320.

The previous prime is 385918373. The next prime is 385918409. The reversal of 385918398 is 893819583.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27618 + ... + 39173.

It is an arithmetic number, because the mean of its divisors is an integer number (27050760).

Almost surely, 2^385918398 is an apocalyptic number.

385918398 is an abundant number, since it is smaller than the sum of its proper divisors (479705922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385918398 is a wasteful number, since it uses less digits than its factorization.

385918398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66909 (or 66903 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 385918398 is about 19644.8058783995. The cubic root of 385918398 is about 728.0566300088.

The spelling of 385918398 in words is "three hundred eighty-five million, nine hundred eighteen thousand, three hundred ninety-eight".