1591481064 has 32 divisors (see below), whose sum is σ = 3992778720. Its totient is φ = 528616896.

The previous prime is 1591481029. The next prime is 1591481077. The reversal of 1591481064 is 4601841951.

1591481064 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 110367 + ... + 123950.

It is an arithmetic number, because the mean of its divisors is an integer number (124774335).

Almost surely, 2^1591481064 is an apocalyptic number.

It is an amenable number.

1591481064 is an abundant number, since it is smaller than the sum of its proper divisors (2401297656).

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

1591481064 is a wasteful number, since it uses less digits than its factorization.

1591481064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234609 (or 234605 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1591481064 is about 39893.3711786808. The cubic root of 1591481064 is about 1167.5276069447.

The spelling of 1591481064 in words is "one billion, five hundred ninety-one million, four hundred eighty-one thousand, sixty-four".