1499745280 has 176 divisors, whose sum is σ = 4056007680. Its totient is φ = 527155200.

The previous prime is 1499745251. The next prime is 1499745323. The reversal of 1499745280 is 825479941.

It is a tau number, because it is divible by the number of its divisors (176).

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, 1745491 + ... + 1746349.

It is a vampire number, since it can be written as 15872 ⋅ 94490 (with its own digits).

Almost surely, 2^1499745280 is an apocalyptic number.

1499745280 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 1499745280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2028003840).

1499745280 is an abundant number, since it is smaller than the sum of its proper divisors (2556262400).

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

1499745280 is a wasteful number, since it uses less digits than its factorization.

1499745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1499745280 is about 38726.5449013981. The cubic root of 1499745280 is about 1144.6494429715.

The spelling of 1499745280 in words is "one billion, four hundred ninety-nine million, seven hundred forty-five thousand, two hundred eighty".