1591795140 has 96 divisors (see below), whose sum is σ = 4837969920. Its totient is φ = 388717056.

The previous prime is 1591795087. The next prime is 1591795141. The reversal of 1591795140 is 415971951.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1591795092 and 1591795101.

It is not an unprimeable number, because it can be changed into a prime (1591795141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91026 + ... + 107094.

It is an arithmetic number, because the mean of its divisors is an integer number (50395520).

Almost surely, 2^1591795140 is an apocalyptic number.

1591795140 is a gapful number since it is divisible by the number (10) 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 1591795140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2418984960).

1591795140 is an abundant number, since it is smaller than the sum of its proper divisors (3246174780).

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

1591795140 is a wasteful number, since it uses less digits than its factorization.

1591795140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16221 (or 16219 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 42.

The square root of 1591795140 is about 39897.3074279456. The cubic root of 1591795140 is about 1167.6044050689.

The spelling of 1591795140 in words is "one billion, five hundred ninety-one million, seven hundred ninety-five thousand, one hundred forty".