1600115660 has 72 divisors (see below), whose sum is σ = 3969480816. Its totient is φ = 537089280.

The previous prime is 1600115659. The next prime is 1600115663. The reversal of 1600115660 is 665110061.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1600115663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15662 + ... + 58698.

It is an arithmetic number, because the mean of its divisors is an integer number (55131678).

Almost surely, 2^1600115660 is an apocalyptic number.

1600115660 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 1600115660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984740408).

1600115660 is an abundant number, since it is smaller than the sum of its proper divisors (2369365156).

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

1600115660 is a wasteful number, since it uses less digits than its factorization.

1600115660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43083 (or 43068 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1600115660 is about 40001.4457238735. The cubic root of 1600115660 is about 1169.6352772637.

The spelling of 1600115660 in words is "one billion, six hundred million, one hundred fifteen thousand, six hundred sixty".