1908168 has 32 divisors (see below), whose sum is σ = 4884000. Its totient is φ = 621264.

The previous prime is 1908167. The next prime is 1908169. The reversal of 1908168 is 8618091.

It is an interprime number because it is at equal distance from previous prime (1908167) and next prime (1908169).

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=86.

It is a super-2 number, since 2×1908168² = 7282210232448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1908167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44355 + ... + 44397.

It is an arithmetic number, because the mean of its divisors is an integer number (152625).

2^1908168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1908168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2442000).

1908168 is an abundant number, since it is smaller than the sum of its proper divisors (2975832).

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

1908168 is an frugal number, since it uses more digits than its factorization.

1908168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1908168 is about 1381.3645427620. The cubic root of 1908168 is about 124.0334630464.

The spelling of 1908168 in words is "one million, nine hundred eight thousand, one hundred sixty-eight".