2011945100 has 36 divisors (see below), whose sum is σ = 4762825368. Its totient is φ = 731616000.

The previous prime is 2011945099. The next prime is 2011945157. The reversal of 2011945100 is 15491102.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 913421 + ... + 915620.

Almost surely, 2^2011945100 is an apocalyptic number.

2011945100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011945100 is an abundant number, since it is smaller than the sum of its proper divisors (2750880268).

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

2011945100 is a wasteful number, since it uses less digits than its factorization.

2011945100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829066 (or 1829059 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 2011945100 is about 44854.7110123340. The cubic root of 2011945100 is about 1262.4243865442.

The spelling of 2011945100 in words is "two billion, eleven million, nine hundred forty-five thousand, one hundred".