1373745165 has 32 divisors (see below), whose sum is σ = 2369611776. Its totient is φ = 675578880.

The previous prime is 1373745161. The next prime is 1373745179. The reversal of 1373745165 is 5615473731.

It is not a de Polignac number, because 1373745165 - 2² = 1373745161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373745161) 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 31 ways as a sum of consecutive naturals, for example, 208725 + ... + 215205.

It is an arithmetic number, because the mean of its divisors is an integer number (74050368).

Almost surely, 2^1373745165 is an apocalyptic number.

1373745165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1373745165 is a deficient number, since it is larger than the sum of its proper divisors (995866611).

1373745165 is a wasteful number, since it uses less digits than its factorization.

1373745165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7589.

The product of its digits is 264600, while the sum is 42.

The square root of 1373745165 is about 37064.0683816550. The cubic root of 1373745165 is about 1111.6516722624.

The spelling of 1373745165 in words is "one billion, three hundred seventy-three million, seven hundred forty-five thousand, one hundred sixty-five".