2145530960 has 20 divisors (see below), whose sum is σ = 4988359668. Its totient is φ = 858212352.

The previous prime is 2145530957. The next prime is 2145530971. The reversal of 2145530960 is 690355412.

It can be written as a sum of positive squares in 2 ways, for example, as 440832016 + 1704698944 = 20996^2 + 41288^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 2145530960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13409489 + ... + 13409648.

Almost surely, 2^2145530960 is an apocalyptic number.

2145530960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145530960 is an abundant number, since it is smaller than the sum of its proper divisors (2842828708).

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

2145530960 is a wasteful number, since it uses less digits than its factorization.

2145530960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26819150 (or 26819144 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2145530960 is about 46319.8765110616. The cubic root of 2145530960 is about 1289.7679930495.

The spelling of 2145530960 in words is "two billion, one hundred forty-five million, five hundred thirty thousand, nine hundred sixty".