161612268 has 36 divisors (see below), whose sum is σ = 400590792. Its totient is φ = 50700800.

The previous prime is 161612267. The next prime is 161612279. The reversal of 161612268 is 862216161.

It is a super-2 number, since 2×161612268² = 52237050336207648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161612267) 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 11 ways as a sum of consecutive naturals, for example, 19833 + ... + 26768.

It is an arithmetic number, because the mean of its divisors is an integer number (11127522).

Almost surely, 2^161612268 is an apocalyptic number.

It is an amenable number.

161612268 is an abundant number, since it is smaller than the sum of its proper divisors (238978524).

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

161612268 is a wasteful number, since it uses less digits than its factorization.

161612268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46642 (or 46623 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 161612268 is about 12712.6813851367. The cubic root of 161612268 is about 544.7009194258.

The spelling of 161612268 in words is "one hundred sixty-one million, six hundred twelve thousand, two hundred sixty-eight".