1366894899 has 16 divisors (see below), whose sum is σ = 2113075200. Its totient is φ = 871642728.

The previous prime is 1366894889. The next prime is 1366894967. The reversal of 1366894899 is 9984986631.

It is a happy number.

1366894899 is a `hidden beast` number, since 13 + 66 + 89 + 489 + 9 = 666.

It is not a de Polignac number, because 1366894899 - 2⁸ = 1366894643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366894829) 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, 1099939 + ... + 1101180.

It is an arithmetic number, because the mean of its divisors is an integer number (132067200).

Almost surely, 2^1366894899 is an apocalyptic number.

1366894899 is a deficient number, since it is larger than the sum of its proper divisors (746180301).

1366894899 is a wasteful number, since it uses less digits than its factorization.

1366894899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201151 (or 2201145 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 1366894899 is about 36971.5417449692. The cubic root of 1366894899 is about 1109.8008188990.

The spelling of 1366894899 in words is "one billion, three hundred sixty-six million, eight hundred ninety-four thousand, eight hundred ninety-nine".