1313629 has 2 divisors, whose sum is σ = 1313630. Its totient is φ = 1313628.

The previous prime is 1313623. The next prime is 1313633. The reversal of 1313629 is 9263131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1214404 + 99225 = 1102^2 + 315^2 .

It is an emirp because it is prime and its reverse (9263131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313629 - 2³ = 1313621 is a prime.

It is a super-2 number, since 2×1313629² = 3451242299282, which contains 22 as substring.

1313629 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656814 + 656815.

It is an arithmetic number, because the mean of its divisors is an integer number (656815).

2^1313629 is an apocalyptic number.

It is an amenable number.

1313629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313629 is an equidigital number, since it uses as much as digits as its factorization.

1313629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

The square root of 1313629 is about 1146.1365538190. The cubic root of 1313629 is about 109.5193630055.

The spelling of 1313629 in words is "one million, three hundred thirteen thousand, six hundred twenty-nine".