16189901 has 16 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 12659328.

The previous prime is 16189889. The next prime is 16189903. The reversal of 16189901 is 10998161.

It is a cyclic number.

It is not a de Polignac number, because 16189901 - 2⁶ = 16189837 is a prime.

It is a super-2 number, since 2×16189901² = 524225788779602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16189903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7100 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000).

Almost surely, 2^16189901 is an apocalyptic number.

It is an amenable number.

16189901 is a deficient number, since it is larger than the sum of its proper divisors (3970099).

16189901 is a wasteful number, since it uses less digits than its factorization.

16189901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 16189901 is about 4023.6676055559. The cubic root of 16189901 is about 252.9772094850.

The spelling of 16189901 in words is "sixteen million, one hundred eighty-nine thousand, nine hundred one".