216164326 has 8 divisors (see below), whose sum is σ = 370567440. Its totient is φ = 92641848.

The previous prime is 216164309. The next prime is 216164329. The reversal of 216164326 is 623461612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216164329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7720141 + ... + 7720168.

It is an arithmetic number, because the mean of its divisors is an integer number (46320930).

Almost surely, 2^216164326 is an apocalyptic number.

216164326 is a deficient number, since it is larger than the sum of its proper divisors (154403114).

216164326 is a wasteful number, since it uses less digits than its factorization.

216164326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15440318.

The product of its digits is 10368, while the sum is 31.

The square root of 216164326 is about 14702.5278778855. The cubic root of 216164326 is about 600.1521151354.

The spelling of 216164326 in words is "two hundred sixteen million, one hundred sixty-four thousand, three hundred twenty-six".