2109179490 has 32 divisors (see below), whose sum is σ = 5522216256. Its totient is φ = 511316160.

The previous prime is 2109179447. The next prime is 2109179491. The reversal of 2109179490 is 949719012.

It is not an unprimeable number, because it can be changed into a prime (2109179491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3195397 + ... + 3196056.

It is an arithmetic number, because the mean of its divisors is an integer number (172569258).

Almost surely, 2^2109179490 is an apocalyptic number.

2109179490 is an abundant number, since it is smaller than the sum of its proper divisors (3413036766).

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

2109179490 is a wasteful number, since it uses less digits than its factorization.

2109179490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391474.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 2109179490 is about 45925.8041845758. The cubic root of 2109179490 is about 1282.4423359806.

The spelling of 2109179490 in words is "two billion, one hundred nine million, one hundred seventy-nine thousand, four hundred ninety".