1881894 has 48 divisors (see below), whose sum is σ = 4522608. Its totient is φ = 520128.

The previous prime is 1881889. The next prime is 1881899. The reversal of 1881894 is 4981881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1881889) and next prime (1881899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10792 + ... + 10964.

It is an arithmetic number, because the mean of its divisors is an integer number (94221).

2^1881894 is an apocalyptic number.

1881894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261304).

1881894 is an abundant number, since it is smaller than the sum of its proper divisors (2640714).

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

1881894 is a wasteful number, since it uses less digits than its factorization.

1881894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 222 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 1881894 is about 1371.8214169490. The cubic root of 1881894 is about 123.4615483456.

It can be divided in two parts, 1881 and 894, that added together give a triangular number (2775 = T₇₄).

The spelling of 1881894 in words is "one million, eight hundred eighty-one thousand, eight hundred ninety-four".