1838889 has 32 divisors (see below), whose sum is σ = 3046400. Its totient is φ = 1095120.

The previous prime is 1838869. The next prime is 1838909. The reversal of 1838889 is 9888381.

It is an interprime number because it is at equal distance from previous prime (1838869) and next prime (1838909).

It is not a de Polignac number, because 1838889 - 2⁷ = 1838761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1838819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59304 + ... + 59334.

It is an arithmetic number, because the mean of its divisors is an integer number (95200).

2^1838889 is an apocalyptic number.

It is an amenable number.

1838889 is a deficient number, since it is larger than the sum of its proper divisors (1207511).

1838889 is an equidigital number, since it uses as much as digits as its factorization.

1838889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 47 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 1838889 is about 1356.0564147557. The cubic root of 1838889 is about 122.5138454433.

The spelling of 1838889 in words is "one million, eight hundred thirty-eight thousand, eight hundred eighty-nine".