1499447680 has 64 divisors (see below), whose sum is σ = 3700298880. Its totient is φ = 580423680.

The previous prime is 1499447659. The next prime is 1499447683. The reversal of 1499447680 is 867449941.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1499447683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17949 + ... + 57628.

It is an arithmetic number, because the mean of its divisors is an integer number (57817170).

Almost surely, 2^1499447680 is an apocalyptic number.

1499447680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1499447680 is an abundant number, since it is smaller than the sum of its proper divisors (2200851200).

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

1499447680 is an equidigital number, since it uses as much as digits as its factorization.

1499447680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75627 (or 75615 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1499447680 is about 38722.7023850351. The cubic root of 1499447680 is about 1144.5737256229.

The spelling of 1499447680 in words is "one billion, four hundred ninety-nine million, four hundred forty-seven thousand, six hundred eighty".