1349601689 has 2 divisors, whose sum is σ = 1349601690. Its totient is φ = 1349601688.

The previous prime is 1349601667. The next prime is 1349601697. The reversal of 1349601689 is 9861069431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003939225 + 345662464 = 31685^2 + 18592^2 .

It is an emirp because it is prime and its reverse (9861069431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1349601689 - 2¹² = 1349597593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1349601619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674800844 + 674800845.

It is an arithmetic number, because the mean of its divisors is an integer number (674800845).

Almost surely, 2^1349601689 is an apocalyptic number.

It is an amenable number.

1349601689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349601689 is an equidigital number, since it uses as much as digits as its factorization.

1349601689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1349601689 is about 36736.9254157176. The cubic root of 1349601689 is about 1105.1007433248.

The spelling of 1349601689 in words is "one billion, three hundred forty-nine million, six hundred one thousand, six hundred eighty-nine".