2167172490 has 192 divisors, whose sum is σ = 6576906240. Its totient is φ = 453962880.

The previous prime is 2167172479. The next prime is 2167172503. The reversal of 2167172490 is 942717612.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 864579 + ... + 867081.

It is an arithmetic number, because the mean of its divisors is an integer number (34254720).

Almost surely, 2^2167172490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2167172490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3288453120).

2167172490 is an abundant number, since it is smaller than the sum of its proper divisors (4409733750).

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

2167172490 is a wasteful number, since it uses less digits than its factorization.

2167172490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577 (or 2570 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 2167172490 is about 46552.8999096727. The cubic root of 2167172490 is about 1294.0900351980.

The spelling of 2167172490 in words is "two billion, one hundred sixty-seven million, one hundred seventy-two thousand, four hundred ninety".