2191042476 has 36 divisors (see below), whose sum is σ = 6329678992. Its totient is φ = 626012064.

The previous prime is 2191042457. The next prime is 2191042489. The reversal of 2191042476 is 6742401912.

It is a happy number.

2191042476 is a `hidden beast` number, since 219 + 10 + 424 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 2191042476.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4347055 + ... + 4347558.

Almost surely, 2^2191042476 is an apocalyptic number.

It is an amenable number.

2191042476 is an abundant number, since it is smaller than the sum of its proper divisors (4138636516).

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

2191042476 is a wasteful number, since it uses less digits than its factorization.

2191042476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694630 (or 8694625 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2191042476 is about 46808.5726763806. The cubic root of 2191042476 is about 1298.8238822367.

The spelling of 2191042476 in words is "two billion, one hundred ninety-one million, forty-two thousand, four hundred seventy-six".