160989660 has 384 divisors, whose sum is σ = 609638400. Its totient is φ = 34836480.

The previous prime is 160989649. The next prime is 160989667. The reversal of 160989660 is 66989061.

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 (160989667) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2267425 + ... + 2267495.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^160989660 is an apocalyptic number.

160989660 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 160989660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304819200).

160989660 is an abundant number, since it is smaller than the sum of its proper divisors (448648740).

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

160989660 is a wasteful number, since it uses less digits than its factorization.

160989660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 160989660 is about 12688.1700808273. The cubic root of 160989660 is about 544.0005361514. Note that the first 3 decimals are identical.

The spelling of 160989660 in words is "one hundred sixty million, nine hundred eighty-nine thousand, six hundred sixty".