2145968730 has 24 divisors (see below), whose sum is σ = 5579518932. Its totient is φ = 572258304.

The previous prime is 2145968717. The next prime is 2145968749. The reversal of 2145968730 is 378695412.

2145968730 is a `hidden beast` number, since 21 + 4 + 596 + 8 + 7 + 30 = 666.

2145968730 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1994604921 + 151363809 = 44661^2 + 12303^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

2145968730 is strictly pandigital in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11921959 + ... + 11922138.

It is a 1-persistent number, because it is pandigital, but 2⋅2145968730 = 4291937460 is not.

Almost surely, 2^2145968730 is an apocalyptic number.

2145968730 is an abundant number, since it is smaller than the sum of its proper divisors (3433550202).

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

2145968730 is a wasteful number, since it uses less digits than its factorization.

2145968730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23844110 (or 23844107 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2145968730 is about 46324.6017791842. The cubic root of 2145968730 is about 1289.8557076755.

The spelling of 2145968730 in words is "two billion, one hundred forty-five million, nine hundred sixty-eight thousand, seven hundred thirty".