1366803642 has 16 divisors (see below), whose sum is σ = 2735016480. Its totient is φ = 455366352.

The previous prime is 1366803619. The next prime is 1366803649. The reversal of 1366803642 is 2463086631.

It is a self number, because there is not a number n which added to its sum of digits gives 1366803642.

It is not an unprimeable number, because it can be changed into a prime (1366803649) 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, 45892 + ... + 69567.

It is an arithmetic number, because the mean of its divisors is an integer number (170938530).

Almost surely, 2^1366803642 is an apocalyptic number.

1366803642 is an abundant number, since it is smaller than the sum of its proper divisors (1368212838).

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

1366803642 is a wasteful number, since it uses less digits than its factorization.

1366803642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117437.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 1366803642 is about 36970.3075724290. The cubic root of 1366803642 is about 1109.7761207438.

The spelling of 1366803642 in words is "one billion, three hundred sixty-six million, eight hundred three thousand, six hundred forty-two".