216969183 has 12 divisors (see below), whose sum is σ = 314171520. Its totient is φ = 144290016.

The previous prime is 216969173. The next prime is 216969197. The reversal of 216969183 is 381969612.

It is a happy number.

It is not a de Polignac number, because 216969183 - 2⁶ = 216969119 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216969173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25791 + ... + 33152.

It is an arithmetic number, because the mean of its divisors is an integer number (26180960).

Almost surely, 2^216969183 is an apocalyptic number.

216969183 is a deficient number, since it is larger than the sum of its proper divisors (97202337).

216969183 is a wasteful number, since it uses less digits than its factorization.

216969183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59358 (or 59355 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 216969183 is about 14729.8738283802. The cubic root of 216969183 is about 600.8960528161.

The spelling of 216969183 in words is "two hundred sixteen million, nine hundred sixty-nine thousand, one hundred eighty-three".