2145851203 has 16 divisors (see below), whose sum is σ = 2276352000. Its totient is φ = 2017174752.

The previous prime is 2145851189. The next prime is 2145851219. The reversal of 2145851203 is 3021585412.

It is a cyclic number.

It is not a de Polignac number, because 2145851203 - 2⁹ = 2145850691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145851273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677118 + ... + 1678396.

It is an arithmetic number, because the mean of its divisors is an integer number (142272000).

Almost surely, 2^2145851203 is an apocalyptic number.

2145851203 is a deficient number, since it is larger than the sum of its proper divisors (130500797).

2145851203 is a wasteful number, since it uses less digits than its factorization.

2145851203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 2145851203 is about 46323.3332457845. Note that the first 3 decimals coincide. The cubic root of 2145851203 is about 1289.8321603241.

The spelling of 2145851203 in words is "two billion, one hundred forty-five million, eight hundred fifty-one thousand, two hundred three".