161846986 has 16 divisors (see below), whose sum is σ = 281254464. Its totient is φ = 68412384.

The previous prime is 161846983. The next prime is 161847011. The reversal of 161846986 is 689648161.

161846986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161846983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78160 + ... + 80203.

It is an arithmetic number, because the mean of its divisors is an integer number (17578404).

Almost surely, 2^161846986 is an apocalyptic number.

161846986 is a deficient number, since it is larger than the sum of its proper divisors (119407478).

161846986 is a wasteful number, since it uses less digits than its factorization.

161846986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158445.

The product of its digits is 497664, while the sum is 49.

The square root of 161846986 is about 12721.9096836914. The cubic root of 161846986 is about 544.9644911354.

The spelling of 161846986 in words is "one hundred sixty-one million, eight hundred forty-six thousand, nine hundred eighty-six".