161190956 has 12 divisors (see below), whose sum is σ = 282173640. Its totient is φ = 80569920.

The previous prime is 161190949. The next prime is 161190959. The reversal of 161190956 is 659091161.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161190959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19076 + ... + 26196.

It is an arithmetic number, because the mean of its divisors is an integer number (23514470).

Almost surely, 2^161190956 is an apocalyptic number.

It is an amenable number.

161190956 is a deficient number, since it is larger than the sum of its proper divisors (120982684).

161190956 is a wasteful number, since it uses less digits than its factorization.

161190956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12784 (or 12782 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 161190956 is about 12696.1000311119. The cubic root of 161190956 is about 544.2271749784.

The spelling of 161190956 in words is "one hundred sixty-one million, one hundred ninety thousand, nine hundred fifty-six".