261196794 has 48 divisors (see below), whose sum is σ = 587101320. Its totient is φ = 83825280.

The previous prime is 261196783. The next prime is 261196799. The reversal of 261196794 is 497691162.

It can be written as a sum of positive squares in 4 ways, for example, as 254243025 + 6953769 = 15945^2 + 2637^2 .

It is not an unprimeable number, because it can be changed into a prime (261196799) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 344664 + ... + 345420.

Almost surely, 2^261196794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261196794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293550660).

261196794 is an abundant number, since it is smaller than the sum of its proper divisors (325904526).

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

261196794 is a wasteful number, since it uses less digits than its factorization.

261196794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1452 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 261196794 is about 16161.5838951509. The cubic root of 261196794 is about 639.2282314913.

The spelling of 261196794 in words is "two hundred sixty-one million, one hundred ninety-six thousand, seven hundred ninety-four".