167961966 has 32 divisors (see below), whose sum is σ = 340433280. Its totient is φ = 55240416.

The previous prime is 167961961. The next prime is 167961991. The reversal of 167961966 is 669169761.

It is a super-2 number, since 2×167961966² = 56422444045170312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167961961) 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 15 ways as a sum of consecutive naturals, for example, 254545 + ... + 255203.

It is an arithmetic number, because the mean of its divisors is an integer number (10638540).

Almost surely, 2^167961966 is an apocalyptic number.

167961966 is an abundant number, since it is smaller than the sum of its proper divisors (172471314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

167961966 is a wasteful number, since it uses less digits than its factorization.

167961966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its digits is 734832, while the sum is 51.

The square root of 167961966 is about 12960.0141203627. The cubic root of 167961966 is about 551.7431920850.

The spelling of 167961966 in words is "one hundred sixty-seven million, nine hundred sixty-one thousand, nine hundred sixty-six".