1366926161 has 16 divisors (see below), whose sum is σ = 1403438400. Its totient is φ = 1331001408.

The previous prime is 1366926109. The next prime is 1366926173. The reversal of 1366926161 is 1616296631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366926161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366956161) 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, 3513755 + ... + 3514143.

It is an arithmetic number, because the mean of its divisors is an integer number (87714900).

Almost surely, 2^1366926161 is an apocalyptic number.

It is an amenable number.

1366926161 is a deficient number, since it is larger than the sum of its proper divisors (36512239).

1366926161 is a wasteful number, since it uses less digits than its factorization.

1366926161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928.

The product of its digits is 69984, while the sum is 41.

The square root of 1366926161 is about 36971.9645271928. The cubic root of 1366926161 is about 1109.8092795175.

The spelling of 1366926161 in words is "one billion, three hundred sixty-six million, nine hundred twenty-six thousand, one hundred sixty-one".