1391513 has 4 divisors (see below), whose sum is σ = 1393920. Its totient is φ = 1389108.

The previous prime is 1391483. The next prime is 1391519. The reversal of 1391513 is 3151931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1391513 - 2¹⁰ = 1390489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391519) 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, 248 + ... + 1686.

It is an arithmetic number, because the mean of its divisors is an integer number (348480).

2^1391513 is an apocalyptic number.

It is an amenable number.

1391513 is a deficient number, since it is larger than the sum of its proper divisors (2407).

1391513 is an equidigital number, since it uses as much as digits as its factorization.

1391513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406.

The product of its digits is 405, while the sum is 23.

The square root of 1391513 is about 1179.6240926668. The cubic root of 1391513 is about 111.6423807981.

The spelling of 1391513 in words is "one million, three hundred ninety-one thousand, five hundred thirteen".