1373583613 has 4 divisors (see below), whose sum is σ = 1384399360. Its totient is φ = 1362767868.

The previous prime is 1373583611. The next prime is 1373583643. The reversal of 1373583613 is 3163853731.

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: 3163853731 = 17 ⋅186109043.

It is a cyclic number.

It is not a de Polignac number, because 1373583613 - 2¹ = 1373583611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373583611) 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, 5407683 + ... + 5407936.

It is an arithmetic number, because the mean of its divisors is an integer number (346099840).

Almost surely, 2^1373583613 is an apocalyptic number.

It is an amenable number.

1373583613 is a deficient number, since it is larger than the sum of its proper divisors (10815747).

1373583613 is a wasteful number, since it uses less digits than its factorization.

1373583613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10815746.

The product of its digits is 136080, while the sum is 40.

The square root of 1373583613 is about 37061.8889561771. Note that the first 3 decimals coincide. The cubic root of 1373583613 is about 1111.6080939249.

The spelling of 1373583613 in words is "one billion, three hundred seventy-three million, five hundred eighty-three thousand, six hundred thirteen".