16065918 has 128 divisors (see below), whose sum is σ = 43338240. Its totient is φ = 4354560.

The previous prime is 16065911. The next prime is 16065919. The reversal of 16065918 is 81956061.

16065918 is a `hidden beast` number, since 1 + 60 + 6 + 591 + 8 = 666.

It is a super-2 number, since 2×16065918² = 516227442365448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16065911) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 373605 + ... + 373647.

It is an arithmetic number, because the mean of its divisors is an integer number (338580).

Almost surely, 2^16065918 is an apocalyptic number.

16065918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16065918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21669120).

16065918 is an abundant number, since it is smaller than the sum of its proper divisors (27272322).

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

16065918 is a wasteful number, since it uses less digits than its factorization.

16065918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 16065918 is about 4008.2312807521. The cubic root of 16065918 is about 252.3297836548.

The spelling of 16065918 in words is "sixteen million, sixty-five thousand, nine hundred eighteen".