1889538 has 24 divisors (see below), whose sum is σ = 4396752. Its totient is φ = 539784.

The previous prime is 1889527. The next prime is 1889539. The reversal of 1889538 is 8359881.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1889538.

It is not an unprimeable number, because it can be changed into a prime (1889539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2920 + ... + 3507.

It is an arithmetic number, because the mean of its divisors is an integer number (183198).

2^1889538 is an apocalyptic number.

1889538 is an abundant number, since it is smaller than the sum of its proper divisors (2507214).

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

1889538 is a wasteful number, since it uses less digits than its factorization.

1889538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446 (or 6439 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 1889538 is about 1374.6046704417. The cubic root of 1889538 is about 123.6284839203.

The spelling of 1889538 in words is "one million, eight hundred eighty-nine thousand, five hundred thirty-eight".