159774540 has 96 divisors (see below), whose sum is σ = 463325184. Its totient is φ = 41111040.

The previous prime is 159774539. The next prime is 159774599. The reversal of 159774540 is 45477951.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 159774492 and 159774501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262917 + ... + 263523.

It is an arithmetic number, because the mean of its divisors is an integer number (4826304).

Almost surely, 2^159774540 is an apocalyptic number.

159774540 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 159774540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231662592).

159774540 is an abundant number, since it is smaller than the sum of its proper divisors (303550644).

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

159774540 is a wasteful number, since it uses less digits than its factorization.

159774540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 159774540 is about 12640.1954098819. The cubic root of 159774540 is about 542.6284065360.

The spelling of 159774540 in words is "one hundred fifty-nine million, seven hundred seventy-four thousand, five hundred forty".