2851742166 has 96 divisors (see below), whose sum is σ = 7083417600. Its totient is φ = 749428992.

The previous prime is 2851742149. The next prime is 2851742177. The reversal of 2851742166 is 6612471582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2718010 + ... + 2719058.

It is an arithmetic number, because the mean of its divisors is an integer number (73785600).

Almost surely, 2^2851742166 is an apocalyptic number.

2851742166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2851742166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3541708800).

2851742166 is an abundant number, since it is smaller than the sum of its proper divisors (4231675434).

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

2851742166 is a wasteful number, since it uses less digits than its factorization.

2851742166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470 (or 1457 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2851742166 is about 53401.7056469173. The cubic root of 2851742166 is about 1418.0887740725.

The spelling of 2851742166 in words is "two billion, eight hundred fifty-one million, seven hundred forty-two thousand, one hundred sixty-six".