167881897 has 8 divisors (see below), whose sum is σ = 170019720. Its totient is φ = 165753600.

The previous prime is 167881867. The next prime is 167881907. The reversal of 167881897 is 798188761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28901376 + 138980521 = 5376^2 + 11789^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167881897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167881867) 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 7 ways as a sum of consecutive naturals, for example, 37153 + ... + 41425.

It is an arithmetic number, because the mean of its divisors is an integer number (21252465).

Almost surely, 2^167881897 is an apocalyptic number.

It is an amenable number.

167881897 is a deficient number, since it is larger than the sum of its proper divisors (2137823).

167881897 is a wasteful number, since it uses less digits than its factorization.

167881897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763.

The product of its digits is 1354752, while the sum is 55.

The square root of 167881897 is about 12956.9246737025. The cubic root of 167881897 is about 551.6555044803.

The spelling of 167881897 in words is "one hundred sixty-seven million, eight hundred eighty-one thousand, eight hundred ninety-seven".