1385443475 has 48 divisors (see below), whose sum is σ = 2022370560. Its totient is φ = 931737600.

The previous prime is 1385443471. The next prime is 1385443483. The reversal of 1385443475 is 5743445831.

It is a happy number.

It is not a de Polignac number, because 1385443475 - 2² = 1385443471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1385443471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167231 + ... + 175319.

It is an arithmetic number, because the mean of its divisors is an integer number (42132720).

Almost surely, 2^1385443475 is an apocalyptic number.

1385443475 is a deficient number, since it is larger than the sum of its proper divisors (636927085).

1385443475 is a wasteful number, since it uses less digits than its factorization.

1385443475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160 (or 8155 counting only the distinct ones).

The product of its digits is 806400, while the sum is 44.

The square root of 1385443475 is about 37221.5458437717. The cubic root of 1385443475 is about 1114.7982300950.

The spelling of 1385443475 in words is "one billion, three hundred eighty-five million, four hundred forty-three thousand, four hundred seventy-five".