1385599380 has 48 divisors (see below), whose sum is σ = 4232378304. Its totient is φ = 335902720.

The previous prime is 1385599361. The next prime is 1385599403. The reversal of 1385599380 is 839955831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049037 + ... + 1050356.

It is an arithmetic number, because the mean of its divisors is an integer number (88174548).

Almost surely, 2^1385599380 is an apocalyptic number.

1385599380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385599380 is an abundant number, since it is smaller than the sum of its proper divisors (2846778924).

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

1385599380 is a wasteful number, since it uses less digits than its factorization.

1385599380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099416 (or 2099414 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 51.

The square root of 1385599380 is about 37223.6400691818. The cubic root of 1385599380 is about 1114.8400448887.

The spelling of 1385599380 in words is "one billion, three hundred eighty-five million, five hundred ninety-nine thousand, three hundred eighty".