1373622513 has 4 divisors (see below), whose sum is σ = 1831496688. Its totient is φ = 915748340.

The previous prime is 1373622511. The next prime is 1373622539. The reversal of 1373622513 is 3152263731.

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: 3152263731 = 3 ⋅1050754577.

It is a cyclic number.

It is not a de Polignac number, because 1373622513 - 2¹ = 1373622511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1373622511) 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, 228937083 + ... + 228937088.

It is an arithmetic number, because the mean of its divisors is an integer number (457874172).

Almost surely, 2^1373622513 is an apocalyptic number.

It is an amenable number.

1373622513 is a deficient number, since it is larger than the sum of its proper divisors (457874175).

1373622513 is an equidigital number, since it uses as much as digits as its factorization.

1373622513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457874174.

The product of its digits is 22680, while the sum is 33.

The square root of 1373622513 is about 37062.4137503212. The cubic root of 1373622513 is about 1111.6185874365.

The spelling of 1373622513 in words is "one billion, three hundred seventy-three million, six hundred twenty-two thousand, five hundred thirteen".