1897168 has 40 divisors (see below), whose sum is σ = 4527488. Its totient is φ = 749952.

The previous prime is 1897163. The next prime is 1897171. The reversal of 1897168 is 8617981.

1897168 = T₁₅₇ + T₁₅₈ + ... + T₂₄₇.

It is a self number, because there is not a number n which added to its sum of digits gives 1897168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897163) 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, 805 + ... + 2107.

2^1897168 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 1897168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2263744).

1897168 is an abundant number, since it is smaller than the sum of its proper divisors (2630320).

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

1897168 is a wasteful number, since it uses less digits than its factorization.

1897168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1325 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 1897168 is about 1377.3772177584. The cubic root of 1897168 is about 123.7946653720.

The spelling of 1897168 in words is "one million, eight hundred ninety-seven thousand, one hundred sixty-eight".