385009918 has 8 divisors (see below), whose sum is σ = 586982520. Its totient is φ = 189349080.

The previous prime is 385009873. The next prime is 385009991. The reversal of 385009918 is 819900583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1577788 + ... + 1578031.

It is an arithmetic number, because the mean of its divisors is an integer number (73372815).

Almost surely, 2^385009918 is an apocalyptic number.

385009918 is a deficient number, since it is larger than the sum of its proper divisors (201972602).

385009918 is a wasteful number, since it uses less digits than its factorization.

385009918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155882.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 385009918 is about 19621.6696027632. The cubic root of 385009918 is about 727.4848816940.

The spelling of 385009918 in words is "three hundred eighty-five million, nine thousand, nine hundred eighteen".