161982958 has 8 divisors (see below), whose sum is σ = 243057528. Its totient is φ = 80963784.

The previous prime is 161982949. The next prime is 161982971. The reversal of 161982958 is 859289161.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5541 + ... + 18832.

It is an arithmetic number, because the mean of its divisors is an integer number (30382191).

Almost surely, 2^161982958 is an apocalyptic number.

161982958 is a deficient number, since it is larger than the sum of its proper divisors (81074570).

161982958 is a wasteful number, since it uses less digits than its factorization.

161982958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27698.

The product of its digits is 311040, while the sum is 49.

The square root of 161982958 is about 12727.2525707633. The cubic root of 161982958 is about 545.1170615193.

The spelling of 161982958 in words is "one hundred sixty-one million, nine hundred eighty-two thousand, nine hundred fifty-eight".