161536460 has 12 divisors (see below), whose sum is σ = 339226608. Its totient is φ = 64614576.

The previous prime is 161536457. The next prime is 161536469. The reversal of 161536460 is 64635161.

It is not an unprimeable number, because it can be changed into a prime (161536469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4038392 + ... + 4038431.

It is an arithmetic number, because the mean of its divisors is an integer number (28268884).

Almost surely, 2^161536460 is an apocalyptic number.

161536460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161536460 is an abundant number, since it is smaller than the sum of its proper divisors (177690148).

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

161536460 is a wasteful number, since it uses less digits than its factorization.

161536460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076832 (or 8076830 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 161536460 is about 12709.6994456989. The cubic root of 161536460 is about 544.6157378862.

The spelling of 161536460 in words is "one hundred sixty-one million, five hundred thirty-six thousand, four hundred sixty".