1889812 has 18 divisors (see below), whose sum is σ = 3426878. Its totient is φ = 911232.

The previous prime is 1889803. The next prime is 1889819. The reversal of 1889812 is 2189881.

It can be written as a sum of positive squares in 3 ways, for example, as 1936 + 1887876 = 44^2 + 1374^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16668 + ... + 16780.

2^1889812 is an apocalyptic number.

It is an amenable number.

1889812 is a deficient number, since it is larger than the sum of its proper divisors (1537066).

1889812 is a wasteful number, since it uses less digits than its factorization.

1889812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 152 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 1889812 is about 1374.7043318474. The cubic root of 1889812 is about 123.6344593788.

Multiplying 1889812 by its sum of digits (37), we get a square (69923044 = 8362²).

1889812 divided by its sum of digits (37) gives a square (51076 = 226²).

It can be divided in two parts, 1889 and 812, that added together give a triangular number (2701 = T₇₃).

The spelling of 1889812 in words is "one million, eight hundred eighty-nine thousand, eight hundred twelve".