161041906 has 16 divisors (see below), whose sum is σ = 252336384. Its totient is φ = 76937344.

The previous prime is 161041897. The next prime is 161041913. The reversal of 161041906 is 609140161.

It is a super-2 number, since 2×161041906² = 51868990976225672, which contains 22 as substring.

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, 77031 + ... + 79093.

It is an arithmetic number, because the mean of its divisors is an integer number (15771024).

Almost surely, 2^161041906 is an apocalyptic number.

161041906 is a deficient number, since it is larger than the sum of its proper divisors (91294478).

161041906 is a wasteful number, since it uses less digits than its factorization.

161041906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 161041906 is about 12690.2287607434. The cubic root of 161041906 is about 544.0593779801.

The spelling of 161041906 in words is "one hundred sixty-one million, forty-one thousand, nine hundred six".