2761261291 has 8 divisors (see below), whose sum is σ = 2775838464. Its totient is φ = 2746713000.

The previous prime is 2761261289. The next prime is 2761261309. The reversal of 2761261291 is 1921621672.

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 2761261291 - 2¹ = 2761261289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2761261291.

It is not an unprimeable number, because it can be changed into a prime (2761264291) 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, 199890 + ... + 213256.

It is an arithmetic number, because the mean of its divisors is an integer number (346979808).

Almost surely, 2^2761261291 is an apocalyptic number.

2761261291 is a deficient number, since it is larger than the sum of its proper divisors (14577173).

2761261291 is a wasteful number, since it uses less digits than its factorization.

2761261291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14441.

The product of its digits is 18144, while the sum is 37.

The square root of 2761261291 is about 52547.7049070652. The cubic root of 2761261291 is about 1402.9294596222.

The spelling of 2761261291 in words is "two billion, seven hundred sixty-one million, two hundred sixty-one thousand, two hundred ninety-one".