161589963 has 8 divisors (see below), whose sum is σ = 215668800. Its totient is φ = 107618888.

The previous prime is 161589937. The next prime is 161589991. The reversal of 161589963 is 369985161.

161589963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161589963 - 2⁵ = 161589931 is a prime.

It is a super-2 number, since 2×161589963² = 52222632284682738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161582963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23373 + ... + 29486.

It is an arithmetic number, because the mean of its divisors is an integer number (26958600).

Almost surely, 2^161589963 is an apocalyptic number.

161589963 is a deficient number, since it is larger than the sum of its proper divisors (54078837).

161589963 is a wasteful number, since it uses less digits than its factorization.

161589963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53881.

The product of its digits is 349920, while the sum is 48.

The square root of 161589963 is about 12711.8040812467. The cubic root of 161589963 is about 544.6758592140.

The spelling of 161589963 in words is "one hundred sixty-one million, five hundred eighty-nine thousand, nine hundred sixty-three".