1966831518 has 16 divisors (see below), whose sum is σ = 4060555776. Its totient is φ = 634461720.

The previous prime is 1966831501. The next prime is 1966831519. The reversal of 1966831518 is 8151386691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966831519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5286996 + ... + 5287367.

It is an arithmetic number, because the mean of its divisors is an integer number (253784736).

Almost surely, 2^1966831518 is an apocalyptic number.

1966831518 is an abundant number, since it is smaller than the sum of its proper divisors (2093724258).

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

1966831518 is a wasteful number, since it uses less digits than its factorization.

1966831518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10574399.

The product of its digits is 311040, while the sum is 48.

The square root of 1966831518 is about 44348.9742609680. The cubic root of 1966831518 is about 1252.9172436287.

The spelling of 1966831518 in words is "one billion, nine hundred sixty-six million, eight hundred thirty-one thousand, five hundred eighteen".