216703149 has 16 divisors (see below), whose sum is σ = 312571392. Its totient is φ = 132752448.

The previous prime is 216703133. The next prime is 216703153. The reversal of 216703149 is 941307612.

216703149 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 216703149 - 2⁴ = 216703133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216703649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3762 + ... + 21155.

It is an arithmetic number, because the mean of its divisors is an integer number (19535712).

Almost surely, 2^216703149 is an apocalyptic number.

It is an amenable number.

216703149 is a deficient number, since it is larger than the sum of its proper divisors (95868243).

216703149 is a wasteful number, since it uses less digits than its factorization.

216703149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25156.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 216703149 is about 14720.8406349638. The cubic root of 216703149 is about 600.6503586901.

The spelling of 216703149 in words is "two hundred sixteen million, seven hundred three thousand, one hundred forty-nine".