1313446445 has 16 divisors (see below), whose sum is σ = 1603922880. Its totient is φ = 1032390144.

The previous prime is 1313446429. The next prime is 1313446447. The reversal of 1313446445 is 5446443131.

It is a cyclic number.

It is not a de Polignac number, because 1313446445 - 2⁴ = 1313446429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313446447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57674 + ... + 77156.

It is an arithmetic number, because the mean of its divisors is an integer number (100245180).

Almost surely, 2^1313446445 is an apocalyptic number.

It is an amenable number.

1313446445 is a deficient number, since it is larger than the sum of its proper divisors (290476435).

1313446445 is a wasteful number, since it uses less digits than its factorization.

1313446445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19724.

The product of its digits is 69120, while the sum is 35.

The square root of 1313446445 is about 36241.5016935005. The cubic root of 1313446445 is about 1095.1428946911.

Adding to 1313446445 its reverse (5446443131), we get a palindrome (6759889576).

The spelling of 1313446445 in words is "one billion, three hundred thirteen million, four hundred forty-six thousand, four hundred forty-five".