2130100045 has 4 divisors (see below), whose sum is σ = 2556120060. Its totient is φ = 1704080032.

The previous prime is 2130100033. The next prime is 2130100057. The reversal of 2130100045 is 5400010312.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2130100033) and next prime (2130100057).

It can be written as a sum of positive squares in 2 ways, for example, as 429857289 + 1700242756 = 20733^2 + 41234^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130100045 - 2¹¹ = 2130097997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213010000 + ... + 213010009.

It is an arithmetic number, because the mean of its divisors is an integer number (639030015).

Almost surely, 2^2130100045 is an apocalyptic number.

It is an amenable number.

2130100045 is a deficient number, since it is larger than the sum of its proper divisors (426020015).

2130100045 is an equidigital number, since it uses as much as digits as its factorization.

2130100045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426020014.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2130100045 is about 46153.0068901258. The cubic root of 2130100045 is about 1286.6684953112.

Adding to 2130100045 its reverse (5400010312), we get a palindrome (7530110357).

The spelling of 2130100045 in words is "two billion, one hundred thirty million, one hundred thousand, forty-five".