1385589243 has 6 divisors (see below), whose sum is σ = 1847538292. Its totient is φ = 923683180.

The previous prime is 1385589223. The next prime is 1385589251. The reversal of 1385589243 is 3429855831.

It is not a de Polignac number, because 1385589243 - 2⁹ = 1385588731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1385589192 and 1385589201.

It is not an unprimeable number, because it can be changed into a prime (1385589223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53728 + ... + 75218.

Almost surely, 2^1385589243 is an apocalyptic number.

1385589243 is a deficient number, since it is larger than the sum of its proper divisors (461949049).

1385589243 is an frugal number, since it uses more digits than its factorization.

1385589243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42985 (or 21494 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 1385589243 is about 37223.5039054627. The cubic root of 1385589243 is about 1114.8373261709.

Multiplying 1385589243 by its sum of digits (48), we get a square (66508283664 = 257892²).

The spelling of 1385589243 in words is "one billion, three hundred eighty-five million, five hundred eighty-nine thousand, two hundred forty-three".