2291187086 has 8 divisors (see below), whose sum is σ = 3617663880. Its totient is φ = 1085299128.

The previous prime is 2291187077. The next prime is 2291187089. The reversal of 2291187086 is 6807811922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291187089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30147161 + ... + 30147236.

It is an arithmetic number, because the mean of its divisors is an integer number (452207985).

Almost surely, 2^2291187086 is an apocalyptic number.

2291187086 is a deficient number, since it is larger than the sum of its proper divisors (1326476794).

2291187086 is a wasteful number, since it uses less digits than its factorization.

2291187086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60294418.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 2291187086 is about 47866.3460690285. The cubic root of 2291187086 is about 1318.3180072552.

The spelling of 2291187086 in words is "two billion, two hundred ninety-one million, one hundred eighty-seven thousand, eighty-six".