1315945 has 8 divisors (see below), whose sum is σ = 1647936. Its totient is φ = 1006896.

The previous prime is 1315943. The next prime is 1315949. The reversal of 1315945 is 5495131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315945 - 2¹ = 1315943 is a prime.

It is a super-2 number, since 2×1315945² = 3463422486050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5607 + ... + 5836.

It is an arithmetic number, because the mean of its divisors is an integer number (205992).

2^1315945 is an apocalyptic number.

It is an amenable number.

1315945 is a deficient number, since it is larger than the sum of its proper divisors (331991).

1315945 is a wasteful number, since it uses less digits than its factorization.

1315945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471.

The product of its digits is 2700, while the sum is 28.

The square root of 1315945 is about 1147.1464596990. The cubic root of 1315945 is about 109.5836880993.

The spelling of 1315945 in words is "one million, three hundred fifteen thousand, nine hundred forty-five".