1889149 has 4 divisors (see below), whose sum is σ = 1902880. Its totient is φ = 1875420.

The previous prime is 1889143. The next prime is 1889177. The reversal of 1889149 is 9419881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1889149 - 2⁵ = 1889117 is a prime.

It is a Duffinian number.

1889149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6657 + ... + 6934.

It is an arithmetic number, because the mean of its divisors is an integer number (475720).

2^1889149 is an apocalyptic number.

It is an amenable number.

1889149 is a deficient number, since it is larger than the sum of its proper divisors (13731).

1889149 is a wasteful number, since it uses less digits than its factorization.

1889149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13730.

The product of its digits is 20736, while the sum is 40.

The square root of 1889149 is about 1374.4631679314. The cubic root of 1889149 is about 123.6199995217.

The spelling of 1889149 in words is "one million, eight hundred eighty-nine thousand, one hundred forty-nine".