1315855628 has 12 divisors (see below), whose sum is σ = 2382152640. Its totient is φ = 635240592.

The previous prime is 1315855609. The next prime is 1315855633. The reversal of 1315855628 is 8265585131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5671676 + ... + 5671907.

It is an arithmetic number, because the mean of its divisors is an integer number (198512720).

Almost surely, 2^1315855628 is an apocalyptic number.

It is an amenable number.

1315855628 is a deficient number, since it is larger than the sum of its proper divisors (1066297012).

1315855628 is a wasteful number, since it uses less digits than its factorization.

1315855628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343616 (or 11343614 counting only the distinct ones).

The product of its digits is 288000, while the sum is 44.

The square root of 1315855628 is about 36274.7243683532. The cubic root of 1315855628 is about 1095.8120726234.

It can be divided in two parts, 13158 and 55628, that added together give a palindrome (68786).

The spelling of 1315855628 in words is "one billion, three hundred fifteen million, eight hundred fifty-five thousand, six hundred twenty-eight".