159809800 has 48 divisors (see below), whose sum is σ = 380639700. Its totient is φ = 62361600.

The previous prime is 159809791. The next prime is 159809803. The reversal of 159809800 is 8908951.

It can be written as a sum of positive squares in 6 ways, for example, as 191844 + 159617956 = 438^2 + 12634^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (159809803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1545 + ... + 17944.

Almost surely, 2^159809800 is an apocalyptic number.

159809800 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 159809800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190319850).

159809800 is an abundant number, since it is smaller than the sum of its proper divisors (220829900).

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

159809800 is a wasteful number, since it uses less digits than its factorization.

159809800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19546 (or 19537 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 159809800 is about 12641.5900898582. The cubic root of 159809800 is about 542.6683204262.

The spelling of 159809800 in words is "one hundred fifty-nine million, eight hundred nine thousand, eight hundred".