385138380 has 48 divisors (see below), whose sum is σ = 1176424704. Its totient is φ = 93366720.

The previous prime is 385138361. The next prime is 385138393. The reversal of 385138380 is 83831583.

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, 291112 + ... + 292431.

It is an arithmetic number, because the mean of its divisors is an integer number (24508848).

Almost surely, 2^385138380 is an apocalyptic number.

385138380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385138380 is an abundant number, since it is smaller than the sum of its proper divisors (791286324).

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

385138380 is a wasteful number, since it uses less digits than its factorization.

385138380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583566 (or 583564 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 385138380 is about 19624.9428024644. The cubic root of 385138380 is about 727.5657833076.

The spelling of 385138380 in words is "three hundred eighty-five million, one hundred thirty-eight thousand, three hundred eighty".