161500938 has 8 divisors (see below), whose sum is σ = 323001888. Its totient is φ = 53833644.

The previous prime is 161500897. The next prime is 161500949. The reversal of 161500938 is 839005161.

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

161500938 is an admirable number.

It is a super-3 number, since 3×161500938³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161500899 and 161500908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13458406 + ... + 13458417.

It is an arithmetic number, because the mean of its divisors is an integer number (40375236).

Almost surely, 2^161500938 is an apocalyptic number.

161500938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161500938 is a wasteful number, since it uses less digits than its factorization.

161500938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26916828.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 161500938 is about 12708.3019322016. The cubic root of 161500938 is about 544.5758144772.

The spelling of 161500938 in words is "one hundred sixty-one million, five hundred thousand, nine hundred thirty-eight".