1001853 has 6 divisors (see below), whose sum is σ = 1447134. Its totient is φ = 667896.

The previous prime is 1001839. The next prime is 1001911. The reversal of 1001853 is 3581001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 956484 + 45369 = 978^2 + 213^2 .

It is not a de Polignac number, because 1001853 - 2⁵ = 1001821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001153) 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 5 ways as a sum of consecutive naturals, for example, 55650 + ... + 55667.

It is an arithmetic number, because the mean of its divisors is an integer number (241189).

2^1001853 is an apocalyptic number.

It is an amenable number.

1001853 is a deficient number, since it is larger than the sum of its proper divisors (445281).

1001853 is a wasteful number, since it uses less digits than its factorization.

1001853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111323 (or 111320 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1001853 is about 1000.9260711961. The cubic root of 1001853 is about 100.0617285547.

Adding to 1001853 its reverse (3581001), we get a palindrome (4582854).

It can be divided in two parts, 100 and 1853, that added together give a triangular number (1953 = T₆₂).

The spelling of 1001853 in words is "one million, one thousand, eight hundred fifty-three".