1591491480 has 32 divisors (see below), whose sum is σ = 4774474800. Its totient is φ = 424397696.

The previous prime is 1591491467. The next prime is 1591491511. The reversal of 1591491480 is 841941951.

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, 6631095 + ... + 6631334.

Almost surely, 2^1591491480 is an apocalyptic number.

1591491480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1591491480 is an abundant number, since it is smaller than the sum of its proper divisors (3182983320).

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

1591491480 is a wasteful number, since it uses less digits than its factorization.

1591491480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13262443 (or 13262439 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 1591491480 is about 39893.5017264717. The cubic root of 1591491480 is about 1167.5301540357.

The spelling of 1591491480 in words is "one billion, five hundred ninety-one million, four hundred ninety-one thousand, four hundred eighty".