1909681882 has 8 divisors (see below), whose sum is σ = 2872778976. Its totient is φ = 952088892.

The previous prime is 1909681877. The next prime is 1909681909. The reversal of 1909681882 is 2881869091.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375158 + ... + 1376545.

It is an arithmetic number, because the mean of its divisors is an integer number (359097372).

Almost surely, 2^1909681882 is an apocalyptic number.

1909681882 is a deficient number, since it is larger than the sum of its proper divisors (963097094).

1909681882 is a wasteful number, since it uses less digits than its factorization.

1909681882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752052.

The product of its (nonzero) digits is 497664, while the sum is 52.

The square root of 1909681882 is about 43699.9071166061. The cubic root of 1909681882 is about 1240.6625582490.

It can be divided in two parts, 19096818 and 82, that added together give a square (19096900 = 4370²).

The spelling of 1909681882 in words is "one billion, nine hundred nine million, six hundred eighty-one thousand, eight hundred eighty-two".