1491342480 has 120 divisors (see below), whose sum is σ = 5015425272. Its totient is φ = 397135872.

The previous prime is 1491342443. The next prime is 1491342581. The reversal of 1491342480 is 842431941.

It is a happy number.

1491342480 is a `hidden beast` number, since 1 + 49 + 134 + 2 + 480 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 376049664 + 1115292816 = 19392^2 + 33396^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 933042 + ... + 934638.

Almost surely, 2^1491342480 is an apocalyptic number.

1491342480 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 1491342480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2507712636).

1491342480 is an abundant number, since it is smaller than the sum of its proper divisors (3524082792).

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

1491342480 is a wasteful number, since it uses less digits than its factorization.

1491342480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913 (or 2904 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1491342480 is about 38617.9036199533. The cubic root of 1491342480 is about 1142.5076838092.

The spelling of 1491342480 in words is "one billion, four hundred ninety-one million, three hundred forty-two thousand, four hundred eighty".