205653349 has 16 divisors (see below), whose sum is σ = 232187904. Its totient is φ = 180457200.

The previous prime is 205653323. The next prime is 205653379. The reversal of 205653349 is 943356502.

It is not a de Polignac number, because 205653349 - 2⁵ = 205653317 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 (205653379) 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, 232462 + ... + 233344.

It is an arithmetic number, because the mean of its divisors is an integer number (14511744).

Almost surely, 2^205653349 is an apocalyptic number.

It is an amenable number.

205653349 is a deficient number, since it is larger than the sum of its proper divisors (26534555).

205653349 is a wasteful number, since it uses less digits than its factorization.

205653349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 205653349 is about 14340.6188499660. The cubic root of 205653349 is about 590.2625940156.

The spelling of 205653349 in words is "two hundred five million, six hundred fifty-three thousand, three hundred forty-nine".