167961798 has 12 divisors (see below), whose sum is σ = 363917268. Its totient is φ = 55987260.

The previous prime is 167961797. The next prime is 167961851. The reversal of 167961798 is 897169761.

167961798 is a `hidden beast` number, since 16 + 7 + 9 + 617 + 9 + 8 = 666.

It is a super-2 number, since 2×167961798² = 56422331174785608, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167961793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4665588 + ... + 4665623.

It is an arithmetic number, because the mean of its divisors is an integer number (30326439).

Almost surely, 2^167961798 is an apocalyptic number.

167961798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

167961798 is an abundant number, since it is smaller than the sum of its proper divisors (195955470).

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

167961798 is a wasteful number, since it uses less digits than its factorization.

167961798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331219 (or 9331216 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 167961798 is about 12960.0076388866. The cubic root of 167961798 is about 551.7430081289.

The spelling of 167961798 in words is "one hundred sixty-seven million, nine hundred sixty-one thousand, seven hundred ninety-eight".