223851649 has 12 divisors (see below), whose sum is σ = 262005744. Its totient is φ = 190688904.

The previous prime is 223851613. The next prime is 223851671. The reversal of 223851649 is 946158322.

223851649 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 223851649 - 2⁹ = 223851137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223851449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6027 + ... + 22000.

It is an arithmetic number, because the mean of its divisors is an integer number (21833812).

Almost surely, 2^223851649 is an apocalyptic number.

It is an amenable number.

223851649 is a deficient number, since it is larger than the sum of its proper divisors (38154095).

223851649 is a wasteful number, since it uses less digits than its factorization.

223851649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204 (or 28197 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 223851649 is about 14961.6726671853. The cubic root of 223851649 is about 607.1836930372.

The spelling of 223851649 in words is "two hundred twenty-three million, eight hundred fifty-one thousand, six hundred forty-nine".