1361718499 has 2 divisors, whose sum is σ = 1361718500. Its totient is φ = 1361718498.

The previous prime is 1361718469. The next prime is 1361718521. The reversal of 1361718499 is 9948171631.

It is a strong prime.

It is an emirp because it is prime and its reverse (9948171631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361718499 - 2¹¹ = 1361716451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361718419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680859249 + 680859250.

It is an arithmetic number, because the mean of its divisors is an integer number (680859250).

Almost surely, 2^1361718499 is an apocalyptic number.

1361718499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361718499 is an equidigital number, since it uses as much as digits as its factorization.

1361718499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 1361718499 is about 36901.4701468654. The cubic root of 1361718499 is about 1108.3981165567.

The spelling of 1361718499 in words is "one billion, three hundred sixty-one million, seven hundred eighteen thousand, four hundred ninety-nine".