2145896730 has 24 divisors (see below), whose sum is σ = 5579331732. Its totient is φ = 572239104.

The previous prime is 2145896717. The next prime is 2145896743. The reversal of 2145896730 is 376985412.

2145896730 is a `hidden beast` number, since 2 + 1 + 4 + 589 + 67 + 3 + 0 = 666.

2145896730 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2145896717) and next prime (2145896743).

It can be written as a sum of positive squares in 2 ways, for example, as 1738139481 + 407757249 = 41691^2 + 20193^2 .

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

2145896730 is strictly pandigital in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11921559 + ... + 11921738.

It is a 1-persistent number, because it is pandigital, but 2⋅2145896730 = 4291793460 is not.

Almost surely, 2^2145896730 is an apocalyptic number.

2145896730 is an abundant number, since it is smaller than the sum of its proper divisors (3433435002).

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

2145896730 is a wasteful number, since it uses less digits than its factorization.

2145896730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23843310 (or 23843307 counting only the distinct ones).

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

The square root of 2145896730 is about 46323.8246477987. The cubic root of 2145896730 is about 1289.8412820771.

The spelling of 2145896730 in words is "two billion, one hundred forty-five million, eight hundred ninety-six thousand, seven hundred thirty".