1841868889 has 9 divisors (see below), whose sum is σ = 2142931701. Its totient is φ = 1578487260.

The previous prime is 1841868887. The next prime is 1841868943. The reversal of 1841868889 is 9888681481.

The square root of 1841868889 is 42917.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1841868889 - 2¹ = 1841868887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1841868881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 297354 + ... + 303484.

Almost surely, 2^1841868889 is an apocalyptic number.

1841868889 is the 42917-th square number.

1841868889 is the 21459-th centered octagonal number.

It is an amenable number.

1841868889 is a deficient number, since it is larger than the sum of its proper divisors (301062812).

1841868889 is an frugal number, since it uses more digits than its factorization.

1841868889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12276 (or 6138 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 61.

The cubic root of 1841868889 is about 1225.7998694446.

The spelling of 1841868889 in words is "one billion, eight hundred forty-one million, eight hundred sixty-eight thousand, eight hundred eighty-nine".