18882949 has 2 divisors, whose sum is σ = 18882950. Its totient is φ = 18882948.

The previous prime is 18882923. The next prime is 18882959. The reversal of 18882949 is 94928881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 777924 = 4255^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 18882949 - 2⁷ = 18882821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18882959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9441474 + 9441475.

It is an arithmetic number, because the mean of its divisors is an integer number (9441475).

Almost surely, 2^18882949 is an apocalyptic number.

It is an amenable number.

18882949 is a deficient number, since it is larger than the sum of its proper divisors (1).

18882949 is an equidigital number, since it uses as much as digits as its factorization.

18882949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 49.

The square root of 18882949 is about 4345.4515300484. The cubic root of 18882949 is about 266.2910724473.

The spelling of 18882949 in words is "eighteen million, eight hundred eighty-two thousand, nine hundred forty-nine".