19000812 has 24 divisors (see below), whose sum is σ = 44452800. Its totient is φ = 6316816.

The previous prime is 19000811. The next prime is 19000823. The reversal of 19000812 is 21800091.

It is a super-2 number, since 2×19000812² = 722061713318688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19000811) 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, 3139 + ... + 6917.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^19000812 is an apocalyptic number.

19000812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19000812 is an abundant number, since it is smaller than the sum of its proper divisors (25451988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19000812 is a wasteful number, since it uses less digits than its factorization.

19000812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4203 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 19000812 is about 4358.9920853335. The cubic root of 19000812 is about 266.8439661200.

The spelling of 19000812 in words is "nineteen million, eight hundred twelve", and thus it is an aban number.