161793946 has 8 divisors (see below), whose sum is σ = 242745300. Its totient is φ = 80878848.

The previous prime is 161793941. The next prime is 161793953. The reversal of 161793946 is 649397161.

It is a happy number.

161793946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161010721 + 783225 = 12689^2 + 885^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161793896 and 161793905.

It is not an unprimeable number, because it can be changed into a prime (161793941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10810 + ... + 20986.

Almost surely, 2^161793946 is an apocalyptic number.

161793946 is a deficient number, since it is larger than the sum of its proper divisors (80951354).

161793946 is a wasteful number, since it uses less digits than its factorization.

161793946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18128.

The product of its digits is 244944, while the sum is 46.

The square root of 161793946 is about 12719.8249201787. The cubic root of 161793946 is about 544.9049532648.

The spelling of 161793946 in words is "one hundred sixty-one million, seven hundred ninety-three thousand, nine hundred forty-six".