261116349 has 16 divisors (see below), whose sum is σ = 382916352. Its totient is φ = 157267008.

The previous prime is 261116347. The next prime is 261116351. The reversal of 261116349 is 943611162.

It is an interprime number because it is at equal distance from previous prime (261116347) and next prime (261116351).

It is not a de Polignac number, because 261116349 - 2¹ = 261116347 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261116341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69394 + ... + 73059.

It is an arithmetic number, because the mean of its divisors is an integer number (23932272).

Almost surely, 2^261116349 is an apocalyptic number.

It is an amenable number.

261116349 is a deficient number, since it is larger than the sum of its proper divisors (121800003).

261116349 is a wasteful number, since it uses less digits than its factorization.

261116349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142516.

The product of its digits is 7776, while the sum is 33.

The square root of 261116349 is about 16159.0949313382. The cubic root of 261116349 is about 639.1626002683.

The spelling of 261116349 in words is "two hundred sixty-one million, one hundred sixteen thousand, three hundred forty-nine".