1491054080 has 80 divisors (see below), whose sum is σ = 3591466560. Its totient is φ = 593682432.

The previous prime is 1491054079. The next prime is 1491054091. The reversal of 1491054080 is 804501941.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610622 + ... + 613058.

It is an arithmetic number, because the mean of its divisors is an integer number (44893332).

Almost surely, 2^1491054080 is an apocalyptic number.

1491054080 is a gapful number since it is divisible by the number (10) 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 1491054080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1795733280).

1491054080 is an abundant number, since it is smaller than the sum of its proper divisors (2100412480).

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

1491054080 is an equidigital number, since it uses as much as digits as its factorization.

1491054080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1491054080 is about 38614.1694200458. The cubic root of 1491054080 is about 1142.4340319458.

The spelling of 1491054080 in words is "one billion, four hundred ninety-one million, fifty-four thousand, eighty".