2134541209 has 4 divisors (see below), whose sum is σ = 2134753380. Its totient is φ = 2134329040.

The previous prime is 2134541179. The next prime is 2134541257. The reversal of 2134541209 is 9021454312.

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 913248400 + 1221292809 = 30220^2 + 34947^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134541209 - 2⁷ = 2134541081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2134541009) 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, 90202 + ... + 111379.

It is an arithmetic number, because the mean of its divisors is an integer number (533688345).

Almost surely, 2^2134541209 is an apocalyptic number.

It is an amenable number.

2134541209 is a deficient number, since it is larger than the sum of its proper divisors (212171).

2134541209 is a wasteful number, since it uses less digits than its factorization.

2134541209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212170.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2134541209 is about 46201.0953225137. The cubic root of 2134541209 is about 1287.5620901215.

The spelling of 2134541209 in words is "two billion, one hundred thirty-four million, five hundred forty-one thousand, two hundred nine".