1366380047 has 4 divisors (see below), whose sum is σ = 1367613240. Its totient is φ = 1365146856.

The previous prime is 1366380023. The next prime is 1366380061. The reversal of 1366380047 is 7400836631.

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

It is a cyclic number.

It is not a de Polignac number, because 1366380047 - 2¹² = 1366375951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366380007) 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, 614933 + ... + 617150.

It is an arithmetic number, because the mean of its divisors is an integer number (341903310).

Almost surely, 2^1366380047 is an apocalyptic number.

1366380047 is a deficient number, since it is larger than the sum of its proper divisors (1233193).

1366380047 is a wasteful number, since it uses less digits than its factorization.

1366380047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233192.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 1366380047 is about 36964.5782743426. The cubic root of 1366380047 is about 1109.6614629214.

The spelling of 1366380047 in words is "one billion, three hundred sixty-six million, three hundred eighty thousand, forty-seven".