1366642033 has 4 divisors (see below), whose sum is σ = 1367127268. Its totient is φ = 1366156800.

The previous prime is 1366642031. The next prime is 1366642049. The reversal of 1366642033 is 3302466631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 526105969 + 840536064 = 22937^2 + 28992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366642033 - 2¹ = 1366642031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366642033.

It is not an unprimeable number, because it can be changed into a prime (1366642031) 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, 238368 + ... + 244033.

It is an arithmetic number, because the mean of its divisors is an integer number (341781817).

Almost surely, 2^1366642033 is an apocalyptic number.

It is an amenable number.

1366642033 is a deficient number, since it is larger than the sum of its proper divisors (485235).

1366642033 is an equidigital number, since it uses as much as digits as its factorization.

1366642033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485234.

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 1366642033 is about 36968.1218484250. The cubic root of 1366642033 is about 1109.7323795477.

The spelling of 1366642033 in words is "one billion, three hundred sixty-six million, six hundred forty-two thousand, thirty-three".