1838646 has 32 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 603720.

The previous prime is 1838621. The next prime is 1838659. The reversal of 1838646 is 6468381.

It is a happy number.

1838646 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 646 = 666.

It is a super-2 number, since 2×1838646² = 6761238226632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1838646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4051 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2^1838646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1838646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073600).

1838646 is an abundant number, since it is smaller than the sum of its proper divisors (2308554).

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

1838646 is a wasteful number, since it uses less digits than its factorization.

1838646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 515 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1838646 is about 1355.9668137532. The cubic root of 1838646 is about 122.5084486745.

The spelling of 1838646 in words is "one million, eight hundred thirty-eight thousand, six hundred forty-six".