1888542 has 32 divisors (see below), whose sum is σ = 4304160. Its totient is φ = 613440.

The previous prime is 1888487. The next prime is 1888559. The reversal of 1888542 is 2458881.

It is a junction number, because it is equal to n+sod(n) for n = 1888497 and 1888506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1788 + ... + 2640.

It is an arithmetic number, because the mean of its divisors is an integer number (134505).

2^1888542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1888542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2152080).

1888542 is an abundant number, since it is smaller than the sum of its proper divisors (2415618).

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

1888542 is a wasteful number, since it uses less digits than its factorization.

1888542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 899 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 1888542 is about 1374.2423367078. The cubic root of 1888542 is about 123.6067580432.

It can be divided in two parts, 18885 and 42, that multiplied together give a triangular number (793170 = T₁₂₅₉).

The spelling of 1888542 in words is "one million, eight hundred eighty-eight thousand, five hundred forty-two".