1880989 has 8 divisors (see below), whose sum is σ = 2062368. Its totient is φ = 1701360.

The previous prime is 1880971. The next prime is 1880993. The reversal of 1880989 is 9890881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1880989 - 2¹⁵ = 1848221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880909) 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 7 ways as a sum of consecutive naturals, for example, 3099 + ... + 3655.

It is an arithmetic number, because the mean of its divisors is an integer number (257796).

2^1880989 is an apocalyptic number.

It is an amenable number.

1880989 is a deficient number, since it is larger than the sum of its proper divisors (181379).

1880989 is a wasteful number, since it uses less digits than its factorization.

1880989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1880989 is about 1371.4915238528. The cubic root of 1880989 is about 123.4417543478.

The spelling of 1880989 in words is "one million, eight hundred eighty thousand, nine hundred eighty-nine".