214223642649 has 15 divisors (see below), whose sum is σ = 320019318597. Its totient is φ = 142812984708.

The previous prime is 214223642599. The next prime is 214223642671. The reversal of 214223642649 is 946246322412.

The square root of 214223642649 is 462843.

It is a perfect power (a square), and thus also a powerful number.

214223642649 is a `hidden beast` number, since 2 + 1 + 4 + 22 + 364 + 264 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-214223642649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214223642749) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4139874 + ... + 4191300.

Almost surely, 2^214223642649 is an apocalyptic number.

214223642649 is the 462843-rd square number.

214223642649 is the 231422-nd centered octagonal number.

It is an amenable number.

214223642649 is a deficient number, since it is larger than the sum of its proper divisors (105795675948).

214223642649 is an frugal number, since it uses more digits than its factorization.

214223642649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102866 (or 51430 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The spelling of 214223642649 in words is "two hundred fourteen billion, two hundred twenty-three million, six hundred forty-two thousand, six hundred forty-nine".