1091261298 has 16 divisors (see below), whose sum is σ = 2184006240. Its totient is φ = 363506496.

The previous prime is 1091261273. The next prime is 1091261299. The reversal of 1091261298 is 8921621901.

It is not an unprimeable number, because it can be changed into a prime (1091261299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52140 + ... + 70007.

It is an arithmetic number, because the mean of its divisors is an integer number (136500390).

Almost surely, 2^1091261298 is an apocalyptic number.

1091261298 is an abundant number, since it is smaller than the sum of its proper divisors (1092744942).

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

1091261298 is a wasteful number, since it uses less digits than its factorization.

1091261298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123641.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1091261298 is about 33034.2443231263. The cubic root of 1091261298 is about 1029.5392723737.

The spelling of 1091261298 in words is "one billion, ninety-one million, two hundred sixty-one thousand, two hundred ninety-eight".