2261085491 has 8 divisors (see below), whose sum is σ = 2589496320. Its totient is φ = 1934024328.

The previous prime is 2261085487. The next prime is 2261085529. The reversal of 2261085491 is 1945801622.

2261085491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261085491 - 2² = 2261085487 is a prime.

It is a super-2 number, since 2×2261085491² = 10225015195221422162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261085091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333821 + ... + 340526.

It is an arithmetic number, because the mean of its divisors is an integer number (323687040).

Almost surely, 2^2261085491 is an apocalyptic number.

2261085491 is a deficient number, since it is larger than the sum of its proper divisors (328410829).

2261085491 is an equidigital number, since it uses as much as digits as its factorization.

2261085491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674833.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 2261085491 is about 47550.8726628650. The cubic root of 2261085491 is about 1312.5191876983.

The spelling of 2261085491 in words is "two billion, two hundred sixty-one million, eighty-five thousand, four hundred ninety-one".