261112349 has 12 divisors (see below), whose sum is σ = 271589472. Its totient is φ = 251021880.

The previous prime is 261112337. The next prime is 261112363. The reversal of 261112349 is 943211162.

It is not a de Polignac number, because 261112349 - 2¹⁶ = 261046813 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 (261114349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159674 + ... + 161300.

It is an arithmetic number, because the mean of its divisors is an integer number (22632456).

Almost surely, 2^261112349 is an apocalyptic number.

It is an amenable number.

261112349 is a deficient number, since it is larger than the sum of its proper divisors (10477123).

261112349 is a wasteful number, since it uses less digits than its factorization.

261112349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1825 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 261112349 is about 16158.9711615560. The cubic root of 261112349 is about 639.1593365081.

The spelling of 261112349 in words is "two hundred sixty-one million, one hundred twelve thousand, three hundred forty-nine".