19986150 has 24 divisors (see below), whose sum is σ = 49566024. Its totient is φ = 5329600.

The previous prime is 19986137. The next prime is 19986193. The reversal of 19986150 is 5168991.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19986099 and 19986108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66471 + ... + 66770.

It is an arithmetic number, because the mean of its divisors is an integer number (2065251).

Almost surely, 2^19986150 is an apocalyptic number.

19986150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19986150 is an abundant number, since it is smaller than the sum of its proper divisors (29579874).

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

19986150 is a wasteful number, since it uses less digits than its factorization.

19986150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133256 (or 133251 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 19986150 is about 4470.5872097522. The cubic root of 19986150 is about 271.3790893838.

The spelling of 19986150 in words is "nineteen million, nine hundred eighty-six thousand, one hundred fifty".