1992001100 has 36 divisors (see below), whose sum is σ = 4462089408. Its totient is φ = 771096000.

The previous prime is 1992001093. The next prime is 1992001103. The reversal of 1992001100 is 11002991.

It is not an unprimeable number, because it can be changed into a prime (1992001103) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 318191 + ... + 324390.

It is an arithmetic number, because the mean of its divisors is an integer number (123946928).

Almost surely, 2^1992001100 is an apocalyptic number.

1992001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1992001100 is an abundant number, since it is smaller than the sum of its proper divisors (2470088308).

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

1992001100 is a wasteful number, since it uses less digits than its factorization.

1992001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642626 (or 642619 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1992001100 is about 44631.8395318858. The cubic root of 1992001100 is about 1258.2391419148.

The spelling of 1992001100 in words is "one billion, nine hundred ninety-two million, one thousand, one hundred".