182090937221 has 2 divisors, whose sum is σ = 182090937222. Its totient is φ = 182090937220.

The previous prime is 182090937167. The next prime is 182090937227. The reversal of 182090937221 is 122739090281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95287046596 + 86803890625 = 308686^2 + 294625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-182090937221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (182090937227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91045468610 + 91045468611.

It is an arithmetic number, because the mean of its divisors is an integer number (91045468611).

Almost surely, 2^182090937221 is an apocalyptic number.

It is an amenable number.

182090937221 is a deficient number, since it is larger than the sum of its proper divisors (1).

182090937221 is an equidigital number, since it uses as much as digits as its factorization.

182090937221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 182090937221 in words is "one hundred eighty-two billion, ninety million, nine hundred thirty-seven thousand, two hundred twenty-one".