141991866 has 40 divisors (see below), whose sum is σ = 326779860. Its totient is φ = 46049472.

The previous prime is 141991849. The next prime is 141991877. The reversal of 141991866 is 668199141.

It can be written as a sum of positive squares in 2 ways, for example, as 140920641 + 1071225 = 11871^2 + 1035^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5851 + ... + 17838.

Almost surely, 2^141991866 is an apocalyptic number.

141991866 is an abundant number, since it is smaller than the sum of its proper divisors (184787994).

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

141991866 is a wasteful number, since it uses less digits than its factorization.

141991866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23740 (or 23731 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 141991866 is about 11916.0339878669. The cubic root of 141991866 is about 521.7003829540.

The spelling of 141991866 in words is "one hundred forty-one million, nine hundred ninety-one thousand, eight hundred sixty-six".