19000147 has 4 divisors (see below), whose sum is σ = 19014840. Its totient is φ = 18985456.

The previous prime is 19000123. The next prime is 19000153. The reversal of 19000147 is 74100091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74100091 = 13 ⋅5700007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19000147 is a prime.

It is a super-2 number, since 2×19000147² = 722011172043218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19000187) 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 3 ways as a sum of consecutive naturals, for example, 5197 + ... + 8062.

It is an arithmetic number, because the mean of its divisors is an integer number (4753710).

Almost surely, 2^19000147 is an apocalyptic number.

19000147 is a deficient number, since it is larger than the sum of its proper divisors (14693).

19000147 is a wasteful number, since it uses less digits than its factorization.

19000147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14692.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 19000147 is about 4358.9158055645. The cubic root of 19000147 is about 266.8408530372.

The spelling of 19000147 in words is "nineteen million, one hundred forty-seven", and thus it is an aban number.