1491168 has 72 divisors (see below), whose sum is σ = 4567752. Its totient is φ = 424704.

The previous prime is 1491157. The next prime is 1491179. The reversal of 1491168 is 8611941.

It is an interprime number because it is at equal distance from previous prime (1491157) and next prime (1491179).

It is a congruent number.

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, 4546 + ... + 4862.

It is an arithmetic number, because the mean of its divisors is an integer number (63441).

2^1491168 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 1491168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2283876).

1491168 is an abundant number, since it is smaller than the sum of its proper divisors (3076584).

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

1491168 is a wasteful number, since it uses less digits than its factorization.

1491168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 329 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 1491168 is about 1221.1338992920. The cubic root of 1491168 is about 114.2463126077.

The spelling of 1491168 in words is "one million, four hundred ninety-one thousand, one hundred sixty-eight".