1889949 has 16 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 1174320.

The previous prime is 1889831. The next prime is 1889957. The reversal of 1889949 is 9499881.

It is not a de Polignac number, because 1889949 - 2¹³ = 1881757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1889898 and 1889907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3814 + ... + 4280.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

2^1889949 is an apocalyptic number.

1889949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1889949 is a deficient number, since it is larger than the sum of its proper divisors (805731).

1889949 is a wasteful number, since it uses less digits than its factorization.

1889949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560.

The product of its digits is 186624, while the sum is 48.

The square root of 1889949 is about 1374.7541598410. The cubic root of 1889949 is about 123.6374468914.

The spelling of 1889949 in words is "one million, eight hundred eighty-nine thousand, nine hundred forty-nine".