2187834369 has 12 divisors (see below), whose sum is σ = 3393375984. Its totient is φ = 1250190984.

The previous prime is 2187834347. The next prime is 2187834373. The reversal of 2187834369 is 9634387812.

It is not a de Polignac number, because 2187834369 - 2¹¹ = 2187832321 is a prime.

It is a super-2 number, since 2×2187834369² = 9573238452355256322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2187834379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7441467 + ... + 7441760.

It is an arithmetic number, because the mean of its divisors is an integer number (282781332).

Almost surely, 2^2187834369 is an apocalyptic number.

It is an amenable number.

2187834369 is a deficient number, since it is larger than the sum of its proper divisors (1205541615).

2187834369 is a wasteful number, since it uses less digits than its factorization.

2187834369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14883244 (or 14883237 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 2187834369 is about 46774.2917530560. The cubic root of 2187834369 is about 1298.1896633906.

The spelling of 2187834369 in words is "two billion, one hundred eighty-seven million, eight hundred thirty-four thousand, three hundred sixty-nine".