1302401689 has 2 divisors, whose sum is σ = 1302401690. Its totient is φ = 1302401688.

The previous prime is 1302401627. The next prime is 1302401707. The reversal of 1302401689 is 9861042031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 681993225 + 620408464 = 26115^2 + 24908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302401689 - 2²³ = 1294013081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1302471689) 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, 651200844 + 651200845.

It is an arithmetic number, because the mean of its divisors is an integer number (651200845).

Almost surely, 2^1302401689 is an apocalyptic number.

It is an amenable number.

1302401689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302401689 is an equidigital number, since it uses as much as digits as its factorization.

1302401689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1302401689 is about 36088.8028202655. The cubic root of 1302401689 is about 1092.0645686415.

The spelling of 1302401689 in words is "one billion, three hundred two million, four hundred one thousand, six hundred eighty-nine".