1491159696 has 80 divisors (see below), whose sum is σ = 4163941824. Its totient is φ = 457108992.

The previous prime is 1491159689. The next prime is 1491159721. The reversal of 1491159696 is 6969511941.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168535 + ... + 177161.

Almost surely, 2^1491159696 is an apocalyptic number.

1491159696 is a gapful number since it is divisible by the number (16) 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 1491159696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2081970912).

1491159696 is an abundant number, since it is smaller than the sum of its proper divisors (2672782128).

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

1491159696 is a wasteful number, since it uses less digits than its factorization.

1491159696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928 (or 8922 counting only the distinct ones).

The product of its digits is 524880, while the sum is 51.

The square root of 1491159696 is about 38615.5369767144. The cubic root of 1491159696 is about 1142.4610053613.

The spelling of 1491159696 in words is "one billion, four hundred ninety-one million, one hundred fifty-nine thousand, six hundred ninety-six".