1356671089 has 2 divisors, whose sum is σ = 1356671090. Its totient is φ = 1356671088.

The previous prime is 1356671059. The next prime is 1356671137. The reversal of 1356671089 is 9801766531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1262736225 + 93934864 = 35535^2 + 9692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356671089 - 2²⁷ = 1222453361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356671059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678335544 + 678335545.

It is an arithmetic number, because the mean of its divisors is an integer number (678335545).

Almost surely, 2^1356671089 is an apocalyptic number.

It is an amenable number.

1356671089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356671089 is an equidigital number, since it uses as much as digits as its factorization.

1356671089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1356671089 is about 36833.0162897366. The cubic root of 1356671089 is about 1107.0269407620.

The spelling of 1356671089 in words is "one billion, three hundred fifty-six million, six hundred seventy-one thousand, eighty-nine".