216164145 has 16 divisors (see below), whose sum is σ = 350242560. Its totient is φ = 113827584.

The previous prime is 216164131. The next prime is 216164161. The reversal of 216164145 is 541461612.

216164145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216164145 - 2¹⁴ = 216147761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90024 + ... + 92393.

It is an arithmetic number, because the mean of its divisors is an integer number (21890160).

Almost surely, 2^216164145 is an apocalyptic number.

It is an amenable number.

216164145 is a deficient number, since it is larger than the sum of its proper divisors (134078415).

216164145 is a wasteful number, since it uses less digits than its factorization.

216164145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182504.

The product of its digits is 5760, while the sum is 30.

The square root of 216164145 is about 14702.5217224801. The cubic root of 216164145 is about 600.1519476277.

The spelling of 216164145 in words is "two hundred sixteen million, one hundred sixty-four thousand, one hundred forty-five".