161589422 has 8 divisors (see below), whose sum is σ = 250203072. Its totient is φ = 78188400.

The previous prime is 161589419. The next prime is 161589473. The reversal of 161589422 is 224985161.

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

It is a super-2 number, since 2×161589422² = 52222282604588168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1303079 + ... + 1303202.

It is an arithmetic number, because the mean of its divisors is an integer number (31275384).

Almost surely, 2^161589422 is an apocalyptic number.

161589422 is a deficient number, since it is larger than the sum of its proper divisors (88613650).

161589422 is a wasteful number, since it uses less digits than its factorization.

161589422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606314.

The product of its digits is 34560, while the sum is 38.

The square root of 161589422 is about 12711.7828017946. The cubic root of 161589422 is about 544.6752513586.

The spelling of 161589422 in words is "one hundred sixty-one million, five hundred eighty-nine thousand, four hundred twenty-two".