1331089882 has 4 divisors (see below), whose sum is σ = 1996634826. Its totient is φ = 665544940.

The previous prime is 1331089849. The next prime is 1331089883. The reversal of 1331089882 is 2889801331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2889801331 = 3061 ⋅944071.

It can be written as a sum of positive squares in only one way, i.e., 1309643721 + 21446161 = 36189^2 + 4631^2 .

It is not an unprimeable number, because it can be changed into a prime (1331089883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332772469 + ... + 332772472.

Almost surely, 2^1331089882 is an apocalyptic number.

1331089882 is a deficient number, since it is larger than the sum of its proper divisors (665544944).

1331089882 is an equidigital number, since it uses as much as digits as its factorization.

1331089882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665544943.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 1331089882 is about 36484.1045114170. The cubic root of 1331089882 is about 1100.0247603242.

The spelling of 1331089882 in words is "one billion, three hundred thirty-one million, eighty-nine thousand, eight hundred eighty-two".