1350609649 has 2 divisors, whose sum is σ = 1350609650. Its totient is φ = 1350609648.

The previous prime is 1350609647. The next prime is 1350609677. The reversal of 1350609649 is 9469060531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 679540624 + 671069025 = 26068^2 + 25905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350609649 - 2¹ = 1350609647 is a prime.

Together with 1350609647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1350609647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675304824 + 675304825.

It is an arithmetic number, because the mean of its divisors is an integer number (675304825).

Almost surely, 2^1350609649 is an apocalyptic number.

It is an amenable number.

1350609649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1350609649 is an equidigital number, since it uses as much as digits as its factorization.

1350609649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 1350609649 is about 36750.6414773946. The cubic root of 1350609649 is about 1105.3757924156.

The spelling of 1350609649 in words is "one billion, three hundred fifty million, six hundred nine thousand, six hundred forty-nine".