161430988 has 12 divisors (see below), whose sum is σ = 282660840. Its totient is φ = 80670752.

The previous prime is 161430979. The next prime is 161431003. The reversal of 161430988 is 889034161.

161430988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161430988² = 52119927773312288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161430988.

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, 2281 + ... + 18112.

It is an arithmetic number, because the mean of its divisors is an integer number (23555070).

Almost surely, 2^161430988 is an apocalyptic number.

It is an amenable number.

161430988 is a deficient number, since it is larger than the sum of its proper divisors (121229852).

161430988 is a wasteful number, since it uses less digits than its factorization.

161430988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22376 (or 22374 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 161430988 is about 12705.5494961847. The cubic root of 161430988 is about 544.4971800955.

The spelling of 161430988 in words is "one hundred sixty-one million, four hundred thirty thousand, nine hundred eighty-eight".