1985454 has 24 divisors (see below), whose sum is σ = 4363632. Its totient is φ = 652320.

The previous prime is 1985453. The next prime is 1985471. The reversal of 1985454 is 4545891.

It is a super-2 number, since 2×1985454² = 7884055172232, which contains 22 as substring.

1985454 is a modest number, since divided by 5454 gives 198 as remainder.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 559 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (181818).

2^1985454 is an apocalyptic number.

1985454 is an abundant number, since it is smaller than the sum of its proper divisors (2378178).

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

1985454 is a wasteful number, since it uses less digits than its factorization.

1985454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592 (or 1589 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1985454 is about 1409.0613897201. The cubic root of 1985454 is about 125.6859146180.

The spelling of 1985454 in words is "one million, nine hundred eighty-five thousand, four hundred fifty-four".