1319913 has 36 divisors (see below), whose sum is σ = 2303028. Its totient is φ = 725760.

The previous prime is 1319909. The next prime is 1319917. The reversal of 1319913 is 3199131.

It is an interprime number because it is at equal distance from previous prime (1319909) and next prime (1319917).

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 974169 = 588^2 + 987^2 .

It is not a de Polignac number, because 1319913 - 2² = 1319909 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1319917) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18045 + ... + 18117.

It is an arithmetic number, because the mean of its divisors is an integer number (63973).

2^1319913 is an apocalyptic number.

It is an amenable number.

1319913 is a deficient number, since it is larger than the sum of its proper divisors (983115).

1319913 is a wasteful number, since it uses less digits than its factorization.

1319913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 124 counting only the distinct ones).

The product of its digits is 729, while the sum is 27.

The square root of 1319913 is about 1148.8746667936. The cubic root of 1319913 is about 109.6937210049.

The spelling of 1319913 in words is "one million, three hundred nineteen thousand, nine hundred thirteen".