1491968 has 44 divisors (see below), whose sum is σ = 3144192. Its totient is φ = 706560.

The previous prime is 1491967. The next prime is 1491977. The reversal of 1491968 is 8691941.

It is a happy number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1491961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31721 + ... + 31767.

2^1491968 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 1491968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572096).

1491968 is an abundant number, since it is smaller than the sum of its proper divisors (1652224).

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

1491968 is an equidigital number, since it uses as much as digits as its factorization.

1491968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 80 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 1491968 is about 1221.4614197755. The cubic root of 1491968 is about 114.2667397070.

The spelling of 1491968 in words is "one million, four hundred ninety-one thousand, nine hundred sixty-eight".