216164413 has 4 divisors (see below), whose sum is σ = 216548928. Its totient is φ = 215779900.

The previous prime is 216164411. The next prime is 216164437. The reversal of 216164413 is 314461612.

216164413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216164413 - 2¹ = 216164411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216164411) 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, 191413 + ... + 192538.

It is an arithmetic number, because the mean of its divisors is an integer number (54137232).

Almost surely, 2^216164413 is an apocalyptic number.

It is an amenable number.

216164413 is a deficient number, since it is larger than the sum of its proper divisors (384515).

216164413 is an equidigital number, since it uses as much as digits as its factorization.

216164413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384514.

The product of its digits is 3456, while the sum is 28.

The square root of 216164413 is about 14702.5308365601. The cubic root of 216164413 is about 600.1521956501.

The spelling of 216164413 in words is "two hundred sixteen million, one hundred sixty-four thousand, four hundred thirteen".