1881122986 has 8 divisors (see below), whose sum is σ = 2822074884. Its totient is φ = 940431360.

The previous prime is 1881122983. The next prime is 1881123043. The reversal of 1881122986 is 6892211881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1864598761 + 16524225 = 43181^2 + 4065^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1881122983) 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, 45865 + ... + 76588.

Almost surely, 2^1881122986 is an apocalyptic number.

1881122986 is a deficient number, since it is larger than the sum of its proper divisors (940951898).

1881122986 is a wasteful number, since it uses less digits than its factorization.

1881122986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130136.

The product of its digits is 110592, while the sum is 46.

The square root of 1881122986 is about 43371.9147144785. The cubic root of 1881122986 is about 1234.4468526596.

The spelling of 1881122986 in words is "one billion, eight hundred eighty-one million, one hundred twenty-two thousand, nine hundred eighty-six".