180190000 has 100 divisors (see below), whose sum is σ = 448968784. Its totient is φ = 69984000.

The previous prime is 180189941. The next prime is 180190051. The reversal of 180190000 is 91081.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×180190000² = 64936872200000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 180190000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 369757 + ... + 370243.

Almost surely, 2^180190000 is an apocalyptic number.

180190000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224484392).

180190000 is an abundant number, since it is smaller than the sum of its proper divisors (268778784).

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

180190000 is an equidigital number, since it uses as much as digits as its factorization.

180190000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 180190000 is about 13423.4868793470. The cubic root of 180190000 is about 564.8202106312.

The spelling of 180190000 in words is "one hundred eighty million, one hundred ninety thousand".