1366522987 has 2 divisors, whose sum is σ = 1366522988. Its totient is φ = 1366522986.

The previous prime is 1366522967. The next prime is 1366522991. The reversal of 1366522987 is 7892256631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1366522987 - 2²⁷ = 1232305259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1366522987.

It is not a weakly prime, because it can be changed into another prime (1366522957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683261493 + 683261494.

It is an arithmetic number, because the mean of its divisors is an integer number (683261494).

Almost surely, 2^1366522987 is an apocalyptic number.

1366522987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366522987 is an equidigital number, since it uses as much as digits as its factorization.

1366522987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 1366522987 is about 36966.5116963989. The cubic root of 1366522987 is about 1109.7001562750.

The spelling of 1366522987 in words is "one billion, three hundred sixty-six million, five hundred twenty-two thousand, nine hundred eighty-seven".