2291783490 has 32 divisors (see below), whose sum is σ = 6111423360. Its totient is φ = 611142192.

The previous prime is 2291783393. The next prime is 2291783509. The reversal of 2291783490 is 943871922.

2291783490 is a `hidden beast` number, since 2 + 2 + 91 + 78 + 3 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4243774 + ... + 4244313.

It is an arithmetic number, because the mean of its divisors is an integer number (190981980).

Almost surely, 2^2291783490 is an apocalyptic number.

2291783490 is an abundant number, since it is smaller than the sum of its proper divisors (3819639870).

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

2291783490 is a wasteful number, since it uses less digits than its factorization.

2291783490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488103 (or 8488097 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 2291783490 is about 47872.5755521885. The cubic root of 2291783490 is about 1318.4323849252.

The spelling of 2291783490 in words is "two billion, two hundred ninety-one million, seven hundred eighty-three thousand, four hundred ninety".