18950289 has 8 divisors (see below), whose sum is σ = 25613472. Its totient is φ = 12460320.

The previous prime is 18950279. The next prime is 18950297. The reversal of 18950289 is 98205981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18950289 - 2⁴ = 18950273 is a prime.

It is a super-2 number, since 2×18950289² = 718226906367042, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18950289.

It is not an unprimeable number, because it can be changed into a prime (18950219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43047 + ... + 43484.

It is an arithmetic number, because the mean of its divisors is an integer number (3201684).

Almost surely, 2^18950289 is an apocalyptic number.

It is an amenable number.

18950289 is a deficient number, since it is larger than the sum of its proper divisors (6663183).

18950289 is an equidigital number, since it uses as much as digits as its factorization.

18950289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86607.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 18950289 is about 4353.1929660882. The cubic root of 18950289 is about 266.6072442249.

The spelling of 18950289 in words is "eighteen million, nine hundred fifty thousand, two hundred eighty-nine".