182993989 has 2 divisors, whose sum is σ = 182993990. Its totient is φ = 182993988.

The previous prime is 182993981. The next prime is 182993999. The reversal of 182993989 is 989399281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 70845889 = 10590^2 + 8417^2 .

It is a cyclic number.

It is not a de Polignac number, because 182993989 - 2³ = 182993981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (182993981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91496994 + 91496995.

It is an arithmetic number, because the mean of its divisors is an integer number (91496995).

Almost surely, 2^182993989 is an apocalyptic number.

It is an amenable number.

182993989 is a deficient number, since it is larger than the sum of its proper divisors (1).

182993989 is an equidigital number, since it uses as much as digits as its factorization.

182993989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 58.

The square root of 182993989 is about 13527.5270836912. The cubic root of 182993989 is about 567.7349208198.

The spelling of 182993989 in words is "one hundred eighty-two million, nine hundred ninety-three thousand, nine hundred eighty-nine".