1385837616 has 40 divisors (see below), whose sum is σ = 3703535280. Its totient is φ = 446016256.

The previous prime is 1385837591. The next prime is 1385837659. The reversal of 1385837616 is 6167385831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496395 + ... + 499178.

It is an arithmetic number, because the mean of its divisors is an integer number (92588382).

Almost surely, 2^1385837616 is an apocalyptic number.

1385837616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1385837616 is an abundant number, since it is smaller than the sum of its proper divisors (2317697664).

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

1385837616 is a wasteful number, since it uses less digits than its factorization.

1385837616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995613 (or 995607 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 1385837616 is about 37226.8399948209. The cubic root of 1385837616 is about 1114.9039353648.

The spelling of 1385837616 in words is "one billion, three hundred eighty-five million, eight hundred thirty-seven thousand, six hundred sixteen".