182290421 has 2 divisors, whose sum is σ = 182290422. Its totient is φ = 182290420.

The previous prime is 182290403. The next prime is 182290429. The reversal of 182290421 is 124092281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143664196 + 38626225 = 11986^2 + 6215^2 .

It is a cyclic number.

It is not a de Polignac number, because 182290421 - 2¹⁰ = 182289397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (182290429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91145210 + 91145211.

It is an arithmetic number, because the mean of its divisors is an integer number (91145211).

Almost surely, 2^182290421 is an apocalyptic number.

It is an amenable number.

182290421 is a deficient number, since it is larger than the sum of its proper divisors (1).

182290421 is an equidigital number, since it uses as much as digits as its factorization.

182290421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 182290421 is about 13501.4969910747. The cubic root of 182290421 is about 567.0063848018.

The spelling of 182290421 in words is "one hundred eighty-two million, two hundred ninety thousand, four hundred twenty-one".