161246907 has 12 divisors (see below), whose sum is σ = 235530360. Its totient is φ = 106289568.

The previous prime is 161246881. The next prime is 161246909. The reversal of 161246907 is 709642161.

It is not a de Polignac number, because 161246907 - 2⁸ = 161246651 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (161246909) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 99853 + ... + 101454.

It is an arithmetic number, because the mean of its divisors is an integer number (19627530).

Almost surely, 2^161246907 is an apocalyptic number.

161246907 is a deficient number, since it is larger than the sum of its proper divisors (74283453).

161246907 is a wasteful number, since it uses less digits than its factorization.

161246907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201402 (or 201399 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 161246907 is about 12698.3033118602. The cubic root of 161246907 is about 544.2901366005.

The spelling of 161246907 in words is "one hundred sixty-one million, two hundred forty-six thousand, nine hundred seven".