2168146944 has 132 divisors (see below), whose sum is σ = 6463279680. Its totient is φ = 699310080.

The previous prime is 2168146891. The next prime is 2168146963. The reversal of 2168146944 is 4496418612.

It is a super-2 number, since 2×2168146944² = 9401722341553078272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2168146944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281902 + ... + 289490.

It is an arithmetic number, because the mean of its divisors is an integer number (48964240).

Almost surely, 2^2168146944 is an apocalyptic number.

2168146944 is a gapful number since it is divisible by the number (24) 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 2168146944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3231639840).

2168146944 is an abundant number, since it is smaller than the sum of its proper divisors (4295132736).

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

2168146944 is a wasteful number, since it uses less digits than its factorization.

2168146944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646 (or 7625 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 2168146944 is about 46563.3648268679. The cubic root of 2168146944 is about 1294.2839656549.

The spelling of 2168146944 in words is "two billion, one hundred sixty-eight million, one hundred forty-six thousand, nine hundred forty-four".