2158010045 has 4 divisors (see below), whose sum is σ = 2589612060. Its totient is φ = 1726408032.

The previous prime is 2158010027. The next prime is 2158010047. The reversal of 2158010045 is 5400108512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1696533721 + 461476324 = 41189^2 + 21482^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158010045 - 2⁶ = 2158009981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2158009996 and 2158010023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158010047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215801000 + ... + 215801009.

It is an arithmetic number, because the mean of its divisors is an integer number (647403015).

Almost surely, 2^2158010045 is an apocalyptic number.

It is an amenable number.

2158010045 is a deficient number, since it is larger than the sum of its proper divisors (431602015).

2158010045 is an equidigital number, since it uses as much as digits as its factorization.

2158010045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431602014.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 2158010045 is about 46454.3867142814. The cubic root of 2158010045 is about 1292.2637264885.

Adding to 2158010045 its reverse (5400108512), we get a palindrome (7558118557).

The spelling of 2158010045 in words is "two billion, one hundred fifty-eight million, ten thousand, forty-five".