261894326 has 4 divisors (see below), whose sum is σ = 392841492. Its totient is φ = 130947162.

The previous prime is 261894319. The next prime is 261894341. The reversal of 261894326 is 623498162.

261894326 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65473580 + ... + 65473583.

It is an arithmetic number, because the mean of its divisors is an integer number (98210373).

Almost surely, 2^261894326 is an apocalyptic number.

261894326 is a deficient number, since it is larger than the sum of its proper divisors (130947166).

261894326 is a wasteful number, since it uses less digits than its factorization.

261894326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130947165.

The product of its digits is 124416, while the sum is 41.

The square root of 261894326 is about 16183.1494462605. The cubic root of 261894326 is about 639.7967502379.

The spelling of 261894326 in words is "two hundred sixty-one million, eight hundred ninety-four thousand, three hundred twenty-six".