1365242779 has 2 divisors, whose sum is σ = 1365242780. Its totient is φ = 1365242778.

The previous prime is 1365242743. The next prime is 1365242789. The reversal of 1365242779 is 9772425631.

It is a strong prime.

It is an emirp because it is prime and its reverse (9772425631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1365242779 is a prime.

It is a super-2 number, since 2×1365242779² = 3727775691223285682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1365242729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682621389 + 682621390.

It is an arithmetic number, because the mean of its divisors is an integer number (682621390).

Almost surely, 2^1365242779 is an apocalyptic number.

1365242779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365242779 is an equidigital number, since it uses as much as digits as its factorization.

1365242779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The square root of 1365242779 is about 36949.1918585508. The cubic root of 1365242779 is about 1109.3535122985.

The spelling of 1365242779 in words is "one billion, three hundred sixty-five million, two hundred forty-two thousand, seven hundred seventy-nine".