181990500119 has 2 divisors, whose sum is σ = 181990500120. Its totient is φ = 181990500118.

The previous prime is 181990500091. The next prime is 181990500137. The reversal of 181990500119 is 911005099181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 181990500119 - 2⁸ = 181990499863 is a prime.

It is a super-2 number, since 2×181990500119² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 181990500119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181990500319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90995250059 + 90995250060.

It is an arithmetic number, because the mean of its divisors is an integer number (90995250060).

Almost surely, 2^181990500119 is an apocalyptic number.

181990500119 is a deficient number, since it is larger than the sum of its proper divisors (1).

181990500119 is an equidigital number, since it uses as much as digits as its factorization.

181990500119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 44.

The spelling of 181990500119 in words is "one hundred eighty-one billion, nine hundred ninety million, five hundred thousand, one hundred nineteen".