1889101 has 2 divisors, whose sum is σ = 1889102. Its totient is φ = 1889100.

The previous prime is 1889099. The next prime is 1889117. The reversal of 1889101 is 1019881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 1225 = 1374^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 1889101 - 2¹ = 1889099 is a prime.

Together with 1889099, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1889101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944550 + 944551.

It is an arithmetic number, because the mean of its divisors is an integer number (944551).

2^1889101 is an apocalyptic number.

It is an amenable number.

1889101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889101 is an equidigital number, since it uses as much as digits as its factorization.

1889101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 1889101 is about 1374.4457064577. The cubic root of 1889101 is about 123.6189525229.

The spelling of 1889101 in words is "one million, eight hundred eighty-nine thousand, one hundred one".