18952081 has 2 divisors, whose sum is σ = 18952082. Its totient is φ = 18952080.

The previous prime is 18952079. The next prime is 18952097. The reversal of 18952081 is 18025981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16443025 + 2509056 = 4055^2 + 1584^2 .

It is a cyclic number.

It is not a de Polignac number, because 18952081 - 2¹ = 18952079 is a prime.

It is a super-2 number, since 2×18952081² = 718362748461122, which contains 22 as substring.

Together with 18952079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18952001) 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, 9476040 + 9476041.

It is an arithmetic number, because the mean of its divisors is an integer number (9476041).

Almost surely, 2^18952081 is an apocalyptic number.

It is an amenable number.

18952081 is a deficient number, since it is larger than the sum of its proper divisors (1).

18952081 is an equidigital number, since it uses as much as digits as its factorization.

18952081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 18952081 is about 4353.3987871547. The cubic root of 18952081 is about 266.6156477049.

The spelling of 18952081 in words is "eighteen million, nine hundred fifty-two thousand, eighty-one".