205138374 has 16 divisors (see below), whose sum is σ = 468887808. Its totient is φ = 58610952.

The previous prime is 205138363. The next prime is 205138379. The reversal of 205138374 is 473831502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205138379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2442082 + ... + 2442165.

It is an arithmetic number, because the mean of its divisors is an integer number (29305488).

Almost surely, 2^205138374 is an apocalyptic number.

205138374 is an abundant number, since it is smaller than the sum of its proper divisors (263749434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205138374 is a wasteful number, since it uses less digits than its factorization.

205138374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884259.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 205138374 is about 14322.6524778059. The cubic root of 205138374 is about 589.7694914917.

Adding to 205138374 its reverse (473831502), we get a palindrome (678969876).

The spelling of 205138374 in words is "two hundred five million, one hundred thirty-eight thousand, three hundred seventy-four".