1985154 has 8 divisors (see below), whose sum is σ = 3970320. Its totient is φ = 661716.

The previous prime is 1985077. The next prime is 1985167. The reversal of 1985154 is 4515891.

It is a sphenic number, since it is the product of 3 distinct primes.

1985154 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165424 + ... + 165435.

It is an arithmetic number, because the mean of its divisors is an integer number (496290).

2^1985154 is an apocalyptic number.

1985154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1985154 is a wasteful number, since it uses less digits than its factorization.

1985154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330864.

The product of its digits is 7200, while the sum is 33.

The square root of 1985154 is about 1408.9549318555. The cubic root of 1985154 is about 125.6795839629.

The spelling of 1985154 in words is "one million, nine hundred eighty-five thousand, one hundred fifty-four".