261168498 has 24 divisors (see below), whose sum is σ = 579026448. Its totient is φ = 85031352.

The previous prime is 261168497. The next prime is 261168503. The reversal of 261168498 is 894861162.

It is not an unprimeable number, because it can be changed into a prime (261168497) 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, 167940 + ... + 169487.

It is an arithmetic number, because the mean of its divisors is an integer number (24126102).

Almost surely, 2^261168498 is an apocalyptic number.

261168498 is an abundant number, since it is smaller than the sum of its proper divisors (317857950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261168498 is a wasteful number, since it uses less digits than its factorization.

261168498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337478 (or 337475 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 261168498 is about 16160.7084621931. The cubic root of 261168498 is about 639.2051476766.

The spelling of 261168498 in words is "two hundred sixty-one million, one hundred sixty-eight thousand, four hundred ninety-eight".