16089618 has 32 divisors (see below), whose sum is σ = 34200000. Its totient is φ = 5031936.

The previous prime is 16089617. The next prime is 16089631. The reversal of 16089618 is 81698061.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (16089617) 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, 12258 + ... + 13506.

It is an arithmetic number, because the mean of its divisors is an integer number (1068750).

Almost surely, 2^16089618 is an apocalyptic number.

16089618 is an abundant number, since it is smaller than the sum of its proper divisors (18110382).

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

16089618 is a wasteful number, since it uses less digits than its factorization.

16089618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 16089618 is about 4011.1866074766. The cubic root of 16089618 is about 252.4537993437.

The spelling of 16089618 in words is "sixteen million, eighty-nine thousand, six hundred eighteen".