189900016 has 40 divisors (see below), whose sum is σ = 375225984. Its totient is φ = 93086400.

The previous prime is 189900001. The next prime is 189900023. The reversal of 189900016 is 610009981.

189900016 is nontrivially palindromic in base 15.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 200055 + ... + 201001.

Almost surely, 2^189900016 is an apocalyptic number.

189900016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189900016 is a deficient number, since it is larger than the sum of its proper divisors (185325968).

189900016 is a wasteful number, since it uses less digits than its factorization.

189900016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 189900016 is about 13780.4214739608. The cubic root of 189900016 is about 574.7888484944.

Adding to 189900016 its reverse (610009981), we get a palindrome (799909997).

The spelling of 189900016 in words is "one hundred eighty-nine million, nine hundred thousand, sixteen".