1373613 has 4 divisors (see below), whose sum is σ = 1831488. Its totient is φ = 915740.

The previous prime is 1373611. The next prime is 1373627. The reversal of 1373613 is 3163731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3163731 = 3 ⋅1054577.

It is a cyclic number.

It is not a de Polignac number, because 1373613 - 2¹ = 1373611 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228933 + ... + 228938.

It is an arithmetic number, because the mean of its divisors is an integer number (457872).

2^1373613 is an apocalyptic number.

It is an amenable number.

1373613 is a deficient number, since it is larger than the sum of its proper divisors (457875).

1373613 is an equidigital number, since it uses as much as digits as its factorization.

1373613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457874.

The product of its digits is 1134, while the sum is 24.

The square root of 1373613 is about 1172.0123719484. The cubic root of 1373613 is about 111.1616021265.

The spelling of 1373613 in words is "one million, three hundred seventy-three thousand, six hundred thirteen".