1361264939 has 2 divisors, whose sum is σ = 1361264940. Its totient is φ = 1361264938.

The previous prime is 1361264909. The next prime is 1361264977. The reversal of 1361264939 is 9394621631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361264939 - 2¹² = 1361260843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1361264939.

It is not a weakly prime, because it can be changed into another prime (1361264909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680632469 + 680632470.

It is an arithmetic number, because the mean of its divisors is an integer number (680632470).

Almost surely, 2^1361264939 is an apocalyptic number.

1361264939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361264939 is an equidigital number, since it uses as much as digits as its factorization.

1361264939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 1361264939 is about 36895.3240804306. The cubic root of 1361264939 is about 1108.2750414679.

The spelling of 1361264939 in words is "one billion, three hundred sixty-one million, two hundred sixty-four thousand, nine hundred thirty-nine".