1366681836 has 24 divisors (see below), whose sum is σ = 3434226544. Its totient is φ = 420517440.

The previous prime is 1366681831. The next prime is 1366681843. The reversal of 1366681836 is 6381866631.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1366681831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4380235 + ... + 4380546.

Almost surely, 2^1366681836 is an apocalyptic number.

It is an amenable number.

1366681836 is an abundant number, since it is smaller than the sum of its proper divisors (2067544708).

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

1366681836 is a wasteful number, since it uses less digits than its factorization.

1366681836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8760801 (or 8760799 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 1366681836 is about 36968.6601867041. The cubic root of 1366681836 is about 1109.7431529734.

The spelling of 1366681836 in words is "one billion, three hundred sixty-six million, six hundred eighty-one thousand, eight hundred thirty-six".