1989110 has 32 divisors (see below), whose sum is σ = 3909600. Its totient is φ = 727776.

The previous prime is 1989107. The next prime is 1989131. The reversal of 1989110 is 119891.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68576 + ... + 68604.

It is an arithmetic number, because the mean of its divisors is an integer number (122175).

2^1989110 is an apocalyptic number.

1989110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1989110 is a deficient number, since it is larger than the sum of its proper divisors (1920490).

1989110 is an equidigital number, since it uses as much as digits as its factorization.

1989110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1989110 is about 1410.3581105521. The cubic root of 1989110 is about 125.7630130125.

The spelling of 1989110 in words is "one million, nine hundred eighty-nine thousand, one hundred ten".