182216385 has 80 divisors (see below), whose sum is σ = 358951824. Its totient is φ = 87879168.

The previous prime is 182216347. The next prime is 182216389. The reversal of 182216385 is 583612281.

It is a happy number.

182216385 is a `hidden beast` number, since 18 + 2 + 2 + 1 + 638 + 5 = 666.

182216385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 15186609 + 167029776 = 3897^2 + 12924^2 .

It is not a de Polignac number, because 182216385 - 2¹⁶ = 182150849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (182216389) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 278719 + ... + 279371.

Almost surely, 2^182216385 is an apocalyptic number.

182216385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

182216385 is a deficient number, since it is larger than the sum of its proper divisors (176735439).

182216385 is a wasteful number, since it uses less digits than its factorization.

182216385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 727 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 182216385 is about 13498.7549425864. The cubic root of 182216385 is about 566.9296124936.

The spelling of 182216385 in words is "one hundred eighty-two million, two hundred sixteen thousand, three hundred eighty-five".