2132408645 has 4 divisors (see below), whose sum is σ = 2558890380. Its totient is φ = 1705926912.

The previous prime is 2132408633. The next prime is 2132408653. The reversal of 2132408645 is 5468042312.

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 766293124 + 1366115521 = 27682^2 + 36961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132408645 - 2⁸ = 2132408389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213240860 + ... + 213240869.

It is an arithmetic number, because the mean of its divisors is an integer number (639722595).

Almost surely, 2^2132408645 is an apocalyptic number.

It is an amenable number.

2132408645 is a deficient number, since it is larger than the sum of its proper divisors (426481735).

2132408645 is an equidigital number, since it uses as much as digits as its factorization.

2132408645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426481734.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2132408645 is about 46178.0104053867. The cubic root of 2132408645 is about 1287.1331574342.

The spelling of 2132408645 in words is "two billion, one hundred thirty-two million, four hundred eight thousand, six hundred forty-five".