1366873245 has 16 divisors (see below), whose sum is σ = 2429997120. Its totient is φ = 728998992.

The previous prime is 1366873217. The next prime is 1366873259. The reversal of 1366873245 is 5423786631.

It is not a de Polignac number, because 1366873245 - 2⁵ = 1366873213 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1366873245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5062359 + ... + 5062628.

It is an arithmetic number, because the mean of its divisors is an integer number (151874820).

Almost surely, 2^1366873245 is an apocalyptic number.

1366873245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1366873245 is a deficient number, since it is larger than the sum of its proper divisors (1063123875).

1366873245 is a wasteful number, since it uses less digits than its factorization.

1366873245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125001 (or 10124995 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1366873245 is about 36971.2488969469. The cubic root of 1366873245 is about 1109.7949584743.

The spelling of 1366873245 in words is "one billion, three hundred sixty-six million, eight hundred seventy-three thousand, two hundred forty-five".