1366280099 has 4 divisors (see below), whose sum is σ = 1366569600. Its totient is φ = 1365990600.

The previous prime is 1366280053. The next prime is 1366280119. The reversal of 1366280099 is 9900826631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366280099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366280009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137552 + ... + 147149.

It is an arithmetic number, because the mean of its divisors is an integer number (341642400).

Almost surely, 2^1366280099 is an apocalyptic number.

1366280099 is a deficient number, since it is larger than the sum of its proper divisors (289501).

1366280099 is an equidigital number, since it uses as much as digits as its factorization.

1366280099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289500.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1366280099 is about 36963.2263066957. The cubic root of 1366280099 is about 1109.6344057473.

The spelling of 1366280099 in words is "one billion, three hundred sixty-six million, two hundred eighty thousand, ninety-nine".