2281881782 has 4 divisors (see below), whose sum is σ = 3422822676. Its totient is φ = 1140940890.

The previous prime is 2281881751. The next prime is 2281881787. The reversal of 2281881782 is 2871881822.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281881787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570470444 + ... + 570470447.

It is an arithmetic number, because the mean of its divisors is an integer number (855705669).

Almost surely, 2^2281881782 is an apocalyptic number.

2281881782 is a deficient number, since it is larger than the sum of its proper divisors (1140940894).

2281881782 is a wasteful number, since it uses less digits than its factorization.

2281881782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140940893.

The product of its digits is 229376, while the sum is 47.

The square root of 2281881782 is about 47769.0462747583. The cubic root of 2281881782 is about 1316.5308703902.

The spelling of 2281881782 in words is "two billion, two hundred eighty-one million, eight hundred eighty-one thousand, seven hundred eighty-two".