385489518 has 80 divisors (see below), whose sum is σ = 891395280. Its totient is φ = 110621952.

The previous prime is 385489513. The next prime is 385489529. The reversal of 385489518 is 815984583.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385489513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13292728 + ... + 13292756.

It is an arithmetic number, because the mean of its divisors is an integer number (11142441).

Almost surely, 2^385489518 is an apocalyptic number.

385489518 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

385489518 is an abundant number, since it is smaller than the sum of its proper divisors (505905762).

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

385489518 is an equidigital number, since it uses as much as digits as its factorization.

385489518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 70 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 51.

The square root of 385489518 is about 19633.8869814410. The cubic root of 385489518 is about 727.7868280072.

The spelling of 385489518 in words is "three hundred eighty-five million, four hundred eighty-nine thousand, five hundred eighteen".