161046994 has 8 divisors (see below), whose sum is σ = 242511228. Its totient is φ = 80209920.

The previous prime is 161046973. The next prime is 161047009. The reversal of 161046994 is 499640161.

It can be written as a sum of positive squares in 2 ways, for example, as 160959969 + 87025 = 12687^2 + 295^2 .

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

It is a super-2 number, since 2×161046994² = 51872268552872072, which contains 22 as substring.

It is an unprimeable number.

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, 156147 + ... + 157174.

Almost surely, 2^161046994 is an apocalyptic number.

161046994 is a deficient number, since it is larger than the sum of its proper divisors (81464234).

161046994 is a wasteful number, since it uses less digits than its factorization.

161046994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313580.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 161046994 is about 12690.4292283595. The cubic root of 161046994 is about 544.0651076378.

The spelling of 161046994 in words is "one hundred sixty-one million, forty-six thousand, nine hundred ninety-four".