161000368 has 20 divisors (see below), whose sum is σ = 325501488. Its totient is φ = 77000000.

The previous prime is 161000347. The next prime is 161000369. The reversal of 161000368 is 863000161.

It is a super-2 number, since 2×161000368² = 51842236992270848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161000369) 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, 218383 + ... + 219118.

Almost surely, 2^161000368 is an apocalyptic number.

It is an amenable number.

161000368 is an abundant number, since it is smaller than the sum of its proper divisors (164501120).

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

161000368 is a wasteful number, since it uses less digits than its factorization.

161000368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437532 (or 437526 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 161000368 is about 12688.5920416727. The cubic root of 161000368 is about 544.0125970266.

The spelling of 161000368 in words is "one hundred sixty-one million, three hundred sixty-eight", and thus it is an aban number.