1491794480 has 60 divisors (see below), whose sum is σ = 3812422656. Its totient is φ = 542467200.

The previous prime is 1491794459. The next prime is 1491794509. The reversal of 1491794480 is 844971941.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67376 + ... + 86735.

Almost surely, 2^1491794480 is an apocalyptic number.

1491794480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1491794480 is an abundant number, since it is smaller than the sum of its proper divisors (2320628176).

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

1491794480 is a wasteful number, since it uses less digits than its factorization.

1491794480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154146 (or 154129 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1491794480 is about 38623.7553844781. The cubic root of 1491794480 is about 1142.6230968944.

The spelling of 1491794480 in words is "one billion, four hundred ninety-one million, seven hundred ninety-four thousand, four hundred eighty".