2991573216 has 48 divisors (see below), whose sum is σ = 8725424400. Its totient is φ = 997190784.

The previous prime is 2991573209. The next prime is 2991573239. The reversal of 2991573216 is 6123751992.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730371 + ... + 1732098.

It is an arithmetic number, because the mean of its divisors is an integer number (181779675).

Almost surely, 2^2991573216 is an apocalyptic number.

It is an amenable number.

2991573216 is an abundant number, since it is smaller than the sum of its proper divisors (5733851184).

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

2991573216 is a wasteful number, since it uses less digits than its factorization.

2991573216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462488 (or 3462474 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 2991573216 is about 54695.2759934530. The cubic root of 2991573216 is about 1440.8979122126.

The spelling of 2991573216 in words is "two billion, nine hundred ninety-one million, five hundred seventy-three thousand, two hundred sixteen".