1989192 has 16 divisors (see below), whose sum is σ = 4973040. Its totient is φ = 663056.

The previous prime is 1989161. The next prime is 1989193. The reversal of 1989192 is 2919891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1989192.

It is not an unprimeable number, because it can be changed into a prime (1989193) 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, 41418 + ... + 41465.

It is an arithmetic number, because the mean of its divisors is an integer number (310815).

2^1989192 is an apocalyptic number.

1989192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1989192 is an abundant number, since it is smaller than the sum of its proper divisors (2983848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1989192 is a wasteful number, since it uses less digits than its factorization.

1989192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82892 (or 82888 counting only the distinct ones).

The product of its digits is 11664, while the sum is 39.

The square root of 1989192 is about 1410.3871808833. The cubic root of 1989192 is about 125.7647411598.

The spelling of 1989192 in words is "one million, nine hundred eighty-nine thousand, one hundred ninety-two".