2101619560 has 96 divisors (see below), whose sum is σ = 5197203000. Its totient is φ = 763793408.

The previous prime is 2101619497. The next prime is 2101619561. The reversal of 2101619560 is 659161012.

It can be written as a sum of positive squares in 12 ways, for example, as 547840836 + 1553778724 = 23406^2 + 39418^2 .

It is not an unprimeable number, because it can be changed into a prime (2101619561) 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, 332106 + ... + 338374.

Almost surely, 2^2101619560 is an apocalyptic number.

2101619560 is a gapful number since it is divisible by the number (20) 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 2101619560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598601500).

2101619560 is an abundant number, since it is smaller than the sum of its proper divisors (3095583440).

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

2101619560 is a wasteful number, since it uses less digits than its factorization.

2101619560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343 (or 6322 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 2101619560 is about 45843.4243921634. The cubic root of 2101619560 is about 1280.9082827427.

The spelling of 2101619560 in words is "two billion, one hundred one million, six hundred nineteen thousand, five hundred sixty".