2091538210 has 8 divisors (see below), whose sum is σ = 3764768796. Its totient is φ = 836615280.

The previous prime is 2091538187. The next prime is 2091538213. The reversal of 2091538210 is 128351902.

It can be written as a sum of positive squares in 2 ways, for example, as 2060524449 + 31013761 = 45393^2 + 5569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2091538213) 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, 104576901 + ... + 104576920.

Almost surely, 2^2091538210 is an apocalyptic number.

2091538210 is a deficient number, since it is larger than the sum of its proper divisors (1673230586).

2091538210 is a wasteful number, since it uses less digits than its factorization.

2091538210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209153828.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2091538210 is about 45733.3380587947. The cubic root of 2091538210 is about 1278.8568508750.

The spelling of 2091538210 in words is "two billion, ninety-one million, five hundred thirty-eight thousand, two hundred ten".