1989069120 has 168 divisors, whose sum is σ = 7062581760. Its totient is φ = 513285120.

The previous prime is 1989069109. The next prime is 1989069127. The reversal of 1989069120 is 219609891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989069127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78141 + ... + 100419.

Almost surely, 2^1989069120 is an apocalyptic number.

1989069120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989069120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3531290880).

1989069120 is an abundant number, since it is smaller than the sum of its proper divisors (5073512640).

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

1989069120 is a wasteful number, since it uses less digits than its factorization.

1989069120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22333 (or 22320 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 1989069120 is about 44598.9811542820. The cubic root of 1989069120 is about 1257.6215145009.

The spelling of 1989069120 in words is "one billion, nine hundred eighty-nine million, sixty-nine thousand, one hundred twenty".