1889564 has 6 divisors (see below), whose sum is σ = 3306744. Its totient is φ = 944780.

The previous prime is 1889561. The next prime is 1889579. The reversal of 1889564 is 4659881.

It is a super-2 number, since 2×1889564² = 7140904220192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889561) by changing a digit.

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 as a sum of consecutive naturals, namely, 236192 + ... + 236199.

It is an arithmetic number, because the mean of its divisors is an integer number (551124).

2^1889564 is an apocalyptic number.

It is an amenable number.

1889564 is a deficient number, since it is larger than the sum of its proper divisors (1417180).

1889564 is a wasteful number, since it uses less digits than its factorization.

1889564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472395 (or 472393 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 1889564 is about 1374.6141276737. The cubic root of 1889564 is about 123.6290509594.

The spelling of 1889564 in words is "one million, eight hundred eighty-nine thousand, five hundred sixty-four".