1491260280 has 32 divisors (see below), whose sum is σ = 4473781200. Its totient is φ = 397669376.

The previous prime is 1491260203. The next prime is 1491260297. The reversal of 1491260280 is 820621941.

1491260280 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 6213465 + ... + 6213704.

Almost surely, 2^1491260280 is an apocalyptic number.

1491260280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1491260280 is an abundant number, since it is smaller than the sum of its proper divisors (2982520920).

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

1491260280 is a wasteful number, since it uses less digits than its factorization.

1491260280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427183 (or 12427179 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1491260280 is about 38616.8393320841. The cubic root of 1491260280 is about 1142.4866924634.

The spelling of 1491260280 in words is "one billion, four hundred ninety-one million, two hundred sixty thousand, two hundred eighty".