2134563845 has 4 divisors (see below), whose sum is σ = 2561476620. Its totient is φ = 1707651072.

The previous prime is 2134563839. The next prime is 2134563917. The reversal of 2134563845 is 5483654312.

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 1259469121 + 875094724 = 35489^2 + 29582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134563845 - 2¹⁰ = 2134562821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213456380 + ... + 213456389.

It is an arithmetic number, because the mean of its divisors is an integer number (640369155).

Almost surely, 2^2134563845 is an apocalyptic number.

It is an amenable number.

2134563845 is a deficient number, since it is larger than the sum of its proper divisors (426912775).

2134563845 is an equidigital number, since it uses as much as digits as its factorization.

2134563845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426912774.

The product of its digits is 345600, while the sum is 41.

The square root of 2134563845 is about 46201.3402944114. The cubic root of 2134563845 is about 1287.5666414747.

The spelling of 2134563845 in words is "two billion, one hundred thirty-four million, five hundred sixty-three thousand, eight hundred forty-five".