2291418612 has 96 divisors (see below), whose sum is σ = 6797952000. Its totient is φ = 653865696.

The previous prime is 2291418553. The next prime is 2291418617. The reversal of 2291418612 is 2168141922.

2291418612 is a `hidden beast` number, since 2 + 29 + 1 + 4 + 18 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291418617) 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 31 ways as a sum of consecutive naturals, for example, 847639 + ... + 850337.

It is an arithmetic number, because the mean of its divisors is an integer number (70812000).

Almost surely, 2^2291418612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291418612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3398976000).

2291418612 is an abundant number, since it is smaller than the sum of its proper divisors (4506533388).

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

2291418612 is a wasteful number, since it uses less digits than its factorization.

2291418612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842 (or 3834 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2291418612 is about 47868.7644712082. The cubic root of 2291418612 is about 1318.3624114007.

It can be divided in two parts, 2291 and 418612, that added together give a triangular number (420903 = T₉₁₇).

The spelling of 2291418612 in words is "two billion, two hundred ninety-one million, four hundred eighteen thousand, six hundred twelve".