161129946 has 16 divisors (see below), whose sum is σ = 325451808. Its totient is φ = 53178000.

The previous prime is 161129933. The next prime is 161129957. The reversal of 161129946 is 649921161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132340 + ... + 133551.

It is an arithmetic number, because the mean of its divisors is an integer number (20340738).

Almost surely, 2^161129946 is an apocalyptic number.

161129946 is an abundant number, since it is smaller than the sum of its proper divisors (164321862).

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

161129946 is a wasteful number, since it uses less digits than its factorization.

161129946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265997.

The product of its digits is 23328, while the sum is 39.

The square root of 161129946 is about 12693.6970973787. The cubic root of 161129946 is about 544.1585038595.

The spelling of 161129946 in words is "one hundred sixty-one million, one hundred twenty-nine thousand, nine hundred forty-six".