2291416887 has 4 divisors (see below), whose sum is σ = 3055222520. Its totient is φ = 1527611256.

The previous prime is 2291416879. The next prime is 2291416903. The reversal of 2291416887 is 7886141922.

It is a happy number.

2291416887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2291416887 - 2³ = 2291416879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291416847) 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, 381902812 + ... + 381902817.

It is an arithmetic number, because the mean of its divisors is an integer number (763805630).

Almost surely, 2^2291416887 is an apocalyptic number.

2291416887 is a deficient number, since it is larger than the sum of its proper divisors (763805633).

2291416887 is an equidigital number, since it uses as much as digits as its factorization.

2291416887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763805632.

The product of its digits is 387072, while the sum is 48.

The square root of 2291416887 is about 47868.7464531922. The cubic root of 2291416887 is about 1318.3620805757.

The spelling of 2291416887 in words is "two billion, two hundred ninety-one million, four hundred sixteen thousand, eight hundred eighty-seven".