182018183821 has 2 divisors, whose sum is σ = 182018183822. Its totient is φ = 182018183820.

The previous prime is 182018183783. The next prime is 182018183839. The reversal of 182018183821 is 128381810281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120221692900 + 61796490921 = 346730^2 + 248589^2 .

It is a cyclic number.

It is not a de Polignac number, because 182018183821 - 2²¹ = 182016086669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (182018123821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91009091910 + 91009091911.

It is an arithmetic number, because the mean of its divisors is an integer number (91009091911).

Almost surely, 2^182018183821 is an apocalyptic number.

It is an amenable number.

182018183821 is a deficient number, since it is larger than the sum of its proper divisors (1).

182018183821 is an equidigital number, since it uses as much as digits as its factorization.

182018183821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 43.

The spelling of 182018183821 in words is "one hundred eighty-two billion, eighteen million, one hundred eighty-three thousand, eight hundred twenty-one".