16019690 has 8 divisors (see below), whose sum is σ = 28835460. Its totient is φ = 6407872.

The previous prime is 16019681. The next prime is 16019713. The reversal of 16019690 is 9691061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15976009 + 43681 = 3997^2 + 209^2 .

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

It is a super-3 number, since 3×16019690³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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, 800975 + ... + 800994.

Almost surely, 2^16019690 is an apocalyptic number.

16019690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16019690 is a deficient number, since it is larger than the sum of its proper divisors (12815770).

16019690 is a wasteful number, since it uses less digits than its factorization.

16019690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601976.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 16019690 is about 4002.4604932466. The cubic root of 16019690 is about 252.0875336291.

The spelling of 16019690 in words is "sixteen million, nineteen thousand, six hundred ninety".