2261729485 has 4 divisors (see below), whose sum is σ = 2714075388. Its totient is φ = 1809383584.

The previous prime is 2261729471. The next prime is 2261729489. The reversal of 2261729485 is 5849271622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5849271622 = 2 ⋅2924635811.

It can be written as a sum of positive squares in 2 ways, for example, as 1719677961 + 542051524 = 41469^2 + 23282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261729485 - 2¹⁷ = 2261598413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261729489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226172944 + ... + 226172953.

It is an arithmetic number, because the mean of its divisors is an integer number (678518847).

Almost surely, 2^2261729485 is an apocalyptic number.

It is an amenable number.

2261729485 is a deficient number, since it is larger than the sum of its proper divisors (452345903).

2261729485 is an equidigital number, since it uses as much as digits as its factorization.

2261729485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452345902.

The product of its digits is 483840, while the sum is 46.

The square root of 2261729485 is about 47557.6438125355. The cubic root of 2261729485 is about 1312.6437848222.

The spelling of 2261729485 in words is "two billion, two hundred sixty-one million, seven hundred twenty-nine thousand, four hundred eighty-five".