1936889 has 2 divisors, whose sum is σ = 1936890. Its totient is φ = 1936888.

The previous prime is 1936871. The next prime is 1936943. The reversal of 1936889 is 9886391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1776889 + 160000 = 1333^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1936889 - 2⁸ = 1936633 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1936819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968444 + 968445.

It is an arithmetic number, because the mean of its divisors is an integer number (968445).

2^1936889 is an apocalyptic number.

It is an amenable number.

1936889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1936889 is an equidigital number, since it uses as much as digits as its factorization.

1936889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 1936889 is about 1391.7215957224. The cubic root of 1936889 is about 124.6526677765.

The spelling of 1936889 in words is "one million, nine hundred thirty-six thousand, eight hundred eighty-nine".