385901664 has 24 divisors (see below), whose sum is σ = 1012992120. Its totient is φ = 128633856.

The previous prime is 385901653. The next prime is 385901687. The reversal of 385901664 is 466109583.

It is a tau number, because it is divible by the number of its divisors (24).

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, 2009809 + ... + 2010000.

It is an arithmetic number, because the mean of its divisors is an integer number (42208005).

Almost surely, 2^385901664 is an apocalyptic number.

It is an amenable number.

385901664 is an abundant number, since it is smaller than the sum of its proper divisors (627090456).

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

385901664 is a wasteful number, since it uses less digits than its factorization.

385901664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019822 (or 4019814 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 385901664 is about 19644.3799596729. The cubic root of 385901664 is about 728.0461066479.

The spelling of 385901664 in words is "three hundred eighty-five million, nine hundred one thousand, six hundred sixty-four".