2921189100 has 144 divisors (see below), whose sum is σ = 8598928800. Its totient is φ = 765573120.

The previous prime is 2921189071. The next prime is 2921189147. The reversal of 2921189100 is 19811292.

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 47 ways as a sum of consecutive naturals, for example, 5133616 + ... + 5134184.

Almost surely, 2^2921189100 is an apocalyptic number.

2921189100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921189100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4299464400).

2921189100 is an abundant number, since it is smaller than the sum of its proper divisors (5677739700).

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

2921189100 is a wasteful number, since it uses less digits than its factorization.

2921189100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 845 counting only the distinct ones).

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

The square root of 2921189100 is about 54048.0258658908. The cubic root of 2921189100 is about 1429.5078913730.

The spelling of 2921189100 in words is "two billion, nine hundred twenty-one million, one hundred eighty-nine thousand, one hundred".