19000427 has 8 divisors (see below), whose sum is σ = 19663872. Its totient is φ = 18340200.

The previous prime is 19000411. The next prime is 19000469. The reversal of 19000427 is 72400091.

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

It is a cyclic number.

It is not a de Polignac number, because 19000427 - 2⁴ = 19000411 is a prime.

It is a super-2 number, since 2×19000427² = 722032452364658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19000477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20978 + ... + 21864.

It is an arithmetic number, because the mean of its divisors is an integer number (2457984).

Almost surely, 2^19000427 is an apocalyptic number.

19000427 is a deficient number, since it is larger than the sum of its proper divisors (663445).

19000427 is an equidigital number, since it uses as much as digits as its factorization.

19000427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 19000427 is about 4358.9479235247. The cubic root of 19000427 is about 266.8421638178.

The spelling of 19000427 in words is "nineteen million, four hundred twenty-seven", and thus it is an aban number.