20182919212 has 12 divisors (see below), whose sum is σ = 35332738056. Its totient is φ = 10087851200.

The previous prime is 20182919189. The next prime is 20182919213. The reversal of 20182919212 is 21291928102.

It is not an unprimeable number, because it can be changed into a prime (20182919213) by changing a digit.

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, 889498 + ... + 911905.

It is an arithmetic number, because the mean of its divisors is an integer number (2944394838).

Almost surely, 2^20182919212 is an apocalyptic number.

It is an amenable number.

20182919212 is a deficient number, since it is larger than the sum of its proper divisors (15149818844).

20182919212 is a wasteful number, since it uses less digits than its factorization.

20182919212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804208 (or 1804206 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 20182919212 in words is "twenty billion, one hundred eighty-two million, nine hundred nineteen thousand, two hundred twelve".