261613094 has 4 divisors (see below), whose sum is σ = 392419644. Its totient is φ = 130806546.

The previous prime is 261613081. The next prime is 261613111. The reversal of 261613094 is 490316162.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 261613094.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65403272 + ... + 65403275.

It is an arithmetic number, because the mean of its divisors is an integer number (98104911).

Almost surely, 2^261613094 is an apocalyptic number.

261613094 is a deficient number, since it is larger than the sum of its proper divisors (130806550).

261613094 is a wasteful number, since it uses less digits than its factorization.

261613094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130806549.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 261613094 is about 16174.4580743838. The cubic root of 261613094 is about 639.5676555918.

The spelling of 261613094 in words is "two hundred sixty-one million, six hundred thirteen thousand, ninety-four".