1889964 has 36 divisors (see below), whose sum is σ = 4883424. Its totient is φ = 616032.

The previous prime is 1889957. The next prime is 1889969. The reversal of 1889964 is 4699881.

1889964 = T₃₇ + T₃₈ + ... + T₂₂₄.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889969) 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, 1134 + ... + 2250.

2^1889964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1889964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2441712).

1889964 is an abundant number, since it is smaller than the sum of its proper divisors (2993460).

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

1889964 is a wasteful number, since it uses less digits than its factorization.

1889964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 1169 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1889964 is about 1374.7596153510. The cubic root of 1889964 is about 123.6377739825.

The spelling of 1889964 in words is "one million, eight hundred eighty-nine thousand, nine hundred sixty-four".