73118999 has 2 divisors, whose sum is σ = 73119000. Its totient is φ = 73118998.

The previous prime is 73118971. The next prime is 73119017. The reversal of 73118999 is 99981137.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73118999 - 2¹² = 73114903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73117999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36559499 + 36559500.

It is an arithmetic number, because the mean of its divisors is an integer number (36559500).

Almost surely, 2^73118999 is an apocalyptic number.

73118999 is a deficient number, since it is larger than the sum of its proper divisors (1).

73118999 is an equidigital number, since it uses as much as digits as its factorization.

73118999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 47.

The square root of 73118999 is about 8550.9647993662. The cubic root of 73118999 is about 418.1608909574.

The spelling of 73118999 in words is "seventy-three million, one hundred eighteen thousand, nine hundred ninety-nine".