1366416816 has 20 divisors (see below), whose sum is σ = 3529910232. Its totient is φ = 455472256.

The previous prime is 1366416773. The next prime is 1366416823. The reversal of 1366416816 is 6186146631.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14233461 + ... + 14233556.

Almost surely, 2^1366416816 is an apocalyptic number.

1366416816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1366416816 is an abundant number, since it is smaller than the sum of its proper divisors (2163493416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366416816 is a wasteful number, since it uses less digits than its factorization.

1366416816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28467028 (or 28467022 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 1366416816 is about 36965.0756255144. The cubic root of 1366416816 is about 1109.6714164177.

The spelling of 1366416816 in words is "one billion, three hundred sixty-six million, four hundred sixteen thousand, eight hundred sixteen".