2991445460 has 24 divisors (see below), whose sum is σ = 6651567720. Its totient is φ = 1126191104.

The previous prime is 2991445459. The next prime is 2991445493. The reversal of 2991445460 is 645441992.

It can be written as a sum of positive squares in 4 ways, for example, as 238764304 + 2752681156 = 15452^2 + 52466^2 .

It is a super-2 number, since 2×2991445460² = 17897491880309223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4398845 + ... + 4399524.

It is an arithmetic number, because the mean of its divisors is an integer number (277148655).

Almost surely, 2^2991445460 is an apocalyptic number.

2991445460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2991445460 is an abundant number, since it is smaller than the sum of its proper divisors (3660122260).

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

2991445460 is a wasteful number, since it uses less digits than its factorization.

2991445460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8798395 (or 8798393 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2991445460 is about 54694.1080921885. The cubic root of 2991445460 is about 1440.8774005998.

The spelling of 2991445460 in words is "two billion, nine hundred ninety-one million, four hundred forty-five thousand, four hundred sixty".