1385279507 has 4 divisors (see below), whose sum is σ = 1386698376. Its totient is φ = 1383860640.

The previous prime is 1385279503. The next prime is 1385279521. The reversal of 1385279507 is 7059725831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1385279507 - 2² = 1385279503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385279503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707969 + ... + 709922.

It is an arithmetic number, because the mean of its divisors is an integer number (346674594).

Almost surely, 2^1385279507 is an apocalyptic number.

1385279507 is a deficient number, since it is larger than the sum of its proper divisors (1418869).

1385279507 is an equidigital number, since it uses as much as digits as its factorization.

1385279507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418868.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 1385279507 is about 37219.3431833502. The cubic root of 1385279507 is about 1114.7542493646.

The spelling of 1385279507 in words is "one billion, three hundred eighty-five million, two hundred seventy-nine thousand, five hundred seven".