1992111144 has 32 divisors (see below), whose sum is σ = 5196813120. Its totient is φ = 635165696.

The previous prime is 1992111097. The next prime is 1992111179. The reversal of 1992111144 is 4411112991.

It is a happy number.

1992111144 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803897 + ... + 1805000.

It is an arithmetic number, because the mean of its divisors is an integer number (162400410).

Almost surely, 2^1992111144 is an apocalyptic number.

It is an amenable number.

1992111144 is an abundant number, since it is smaller than the sum of its proper divisors (3204701976).

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

1992111144 is a wasteful number, since it uses less digits than its factorization.

1992111144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608929 (or 3608925 counting only the distinct ones).

The product of its digits is 2592, while the sum is 33.

The square root of 1992111144 is about 44633.0723119079. The cubic root of 1992111144 is about 1258.2623110985.

The spelling of 1992111144 in words is "one billion, nine hundred ninety-two million, one hundred eleven thousand, one hundred forty-four".