1393118999 has 2 divisors, whose sum is σ = 1393119000. Its totient is φ = 1393118998.

The previous prime is 1393118971. The next prime is 1393119011. The reversal of 1393118999 is 9998113931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1393118999 - 2²⁸ = 1124683543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1393118999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393118929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696559499 + 696559500.

It is an arithmetic number, because the mean of its divisors is an integer number (696559500).

Almost surely, 2^1393118999 is an apocalyptic number.

1393118999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393118999 is an equidigital number, since it uses as much as digits as its factorization.

1393118999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 53.

The square root of 1393118999 is about 37324.5093604725. The cubic root of 1393118999 is about 1116.8531454913.

The spelling of 1393118999 in words is "one billion, three hundred ninety-three million, one hundred eighteen thousand, nine hundred ninety-nine".