1597112860 has 72 divisors (see below), whose sum is σ = 3909018960. Its totient is φ = 546529536.

The previous prime is 1597112779. The next prime is 1597112863. The reversal of 1597112860 is 682117951.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597112863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 644584 + ... + 647056.

It is an arithmetic number, because the mean of its divisors is an integer number (54291930).

Almost surely, 2^1597112860 is an apocalyptic number.

1597112860 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 1597112860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1954509480).

1597112860 is an abundant number, since it is smaller than the sum of its proper divisors (2311906100).

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

1597112860 is a wasteful number, since it uses less digits than its factorization.

1597112860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155 (or 3146 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1597112860 is about 39963.8944548701. The cubic root of 1597112860 is about 1168.9031676638.

The spelling of 1597112860 in words is "one billion, five hundred ninety-seven million, one hundred twelve thousand, eight hundred sixty".