1591646112 has 360 divisors, whose sum is σ = 5669316576. Its totient is φ = 430821504.

The previous prime is 1591646087. The next prime is 1591646123. The reversal of 1591646112 is 2116461951.

1591646112 is a `hidden beast` number, since 1 + 5 + 9 + 1 + 646 + 1 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 83770839 + ... + 83770857.

Almost surely, 2^1591646112 is an apocalyptic number.

1591646112 is a gapful number since it is divisible by the number (12) 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 1591646112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2834658288).

1591646112 is an abundant number, since it is smaller than the sum of its proper divisors (4077670464).

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

1591646112 is an frugal number, since it uses more digits than its factorization.

1591646112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 31 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1591646112 is about 39895.4397393988. The cubic root of 1591646112 is about 1167.5679658782.

The spelling of 1591646112 in words is "one billion, five hundred ninety-one million, six hundred forty-six thousand, one hundred twelve".