1827340689 has 4 divisors (see below), whose sum is σ = 2436454256. Its totient is φ = 1218227124.

The previous prime is 1827340687. The next prime is 1827340709. The reversal of 1827340689 is 9860437281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1827340689 - 2¹ = 1827340687 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1827340681) 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, 304556779 + ... + 304556784.

It is an arithmetic number, because the mean of its divisors is an integer number (609113564).

Almost surely, 2^1827340689 is an apocalyptic number.

It is an amenable number.

1827340689 is a deficient number, since it is larger than the sum of its proper divisors (609113567).

1827340689 is an equidigital number, since it uses as much as digits as its factorization.

1827340689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609113566.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 1827340689 is about 42747.4056405766. The cubic root of 1827340689 is about 1222.5684242045.

The spelling of 1827340689 in words is "one billion, eight hundred twenty-seven million, three hundred forty thousand, six hundred eighty-nine".