18950837 has 2 divisors, whose sum is σ = 18950838. Its totient is φ = 18950836.

The previous prime is 18950821. The next prime is 18950851. The reversal of 18950837 is 73805981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 167281 = 4334^2 + 409^2 .

It is an emirp because it is prime and its reverse (73805981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18950837 - 2⁴ = 18950821 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18950794 and 18950803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950807) 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, 9475418 + 9475419.

It is an arithmetic number, because the mean of its divisors is an integer number (9475419).

Almost surely, 2^18950837 is an apocalyptic number.

It is an amenable number.

18950837 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950837 is an equidigital number, since it uses as much as digits as its factorization.

18950837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 18950837 is about 4353.2559079383. The cubic root of 18950837 is about 266.6098140953.

The spelling of 18950837 in words is "eighteen million, nine hundred fifty thousand, eight hundred thirty-seven".