981854 has 4 divisors (see below), whose sum is σ = 1472784. Its totient is φ = 490926.

The previous prime is 981823. The next prime is 981887. The reversal of 981854 is 458189.

It is a semiprime because it is the product of two primes.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245462 + ... + 245465.

It is an arithmetic number, because the mean of its divisors is an integer number (368196).

2⁹⁸¹⁸⁵⁴ is an apocalyptic number.

981854 is a deficient number, since it is larger than the sum of its proper divisors (490930).

981854 is a wasteful number, since it uses less digits than its factorization.

981854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490929.

The product of its digits is 11520, while the sum is 35.

The square root of 981854 is about 990.8854626040. The cubic root of 981854 is about 99.3914373612.

It can be divided in two parts, 98185 and 4, that added together give a palindrome (98189).

The spelling of 981854 in words is "nine hundred eighty-one thousand, eight hundred fifty-four".