161226984 has 16 divisors (see below), whose sum is σ = 403067520. Its totient is φ = 53742320.

The previous prime is 161226983. The next prime is 161227009. The reversal of 161226984 is 489622161.

It is not an unprimeable number, because it can be changed into a prime (161226983) by changing a digit.

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, 3358872 + ... + 3358919.

It is an arithmetic number, because the mean of its divisors is an integer number (25191720).

Almost surely, 2^161226984 is an apocalyptic number.

It is an amenable number.

161226984 is an abundant number, since it is smaller than the sum of its proper divisors (241840536).

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

161226984 is a wasteful number, since it uses less digits than its factorization.

161226984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6717800 (or 6717796 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 161226984 is about 12697.5188127445. The cubic root of 161226984 is about 544.2677189322.

The spelling of 161226984 in words is "one hundred sixty-one million, two hundred twenty-six thousand, nine hundred eighty-four".