1373745465 has 24 divisors (see below), whose sum is σ = 2383247880. Its totient is φ = 732021504.

The previous prime is 1373745433. The next prime is 1373745473. The reversal of 1373745465 is 5645473731.

1373745465 is a `hidden beast` number, since 1 + 37 + 3 + 74 + 546 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 392990976 + 980754489 = 19824^2 + 31317^2 .

It is not a de Polignac number, because 1373745465 - 2⁵ = 1373745433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1373745465.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40891 + ... + 66479.

It is an arithmetic number, because the mean of its divisors is an integer number (99301995).

Almost surely, 2^1373745465 is an apocalyptic number.

1373745465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1373745465 is a deficient number, since it is larger than the sum of its proper divisors (1009502415).

1373745465 is a wasteful number, since it uses less digits than its factorization.

1373745465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26793 (or 26790 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The square root of 1373745465 is about 37064.0724287011. The cubic root of 1373745465 is about 1111.6517531836.

The spelling of 1373745465 in words is "one billion, three hundred seventy-three million, seven hundred forty-five thousand, four hundred sixty-five".