1336245641 has 2 divisors, whose sum is σ = 1336245642. Its totient is φ = 1336245640.

The previous prime is 1336245619. The next prime is 1336245667. The reversal of 1336245641 is 1465426331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239321616 + 96924025 = 35204^2 + 9845^2 .

It is an emirp because it is prime and its reverse (1465426331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1336245641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1336245601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668122820 + 668122821.

It is an arithmetic number, because the mean of its divisors is an integer number (668122821).

Almost surely, 2^1336245641 is an apocalyptic number.

It is an amenable number.

1336245641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1336245641 is an equidigital number, since it uses as much as digits as its factorization.

1336245641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 1336245641 is about 36554.6938299311. The cubic root of 1336245641 is about 1101.4431858958.

The spelling of 1336245641 in words is "one billion, three hundred thirty-six million, two hundred forty-five thousand, six hundred forty-one".