167808397 has 2 divisors, whose sum is σ = 167808398. Its totient is φ = 167808396.

The previous prime is 167808379. The next prime is 167808409. The reversal of 167808397 is 793808761.

Together with previous prime (167808379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154405476 + 13402921 = 12426^2 + 3661^2 .

It is a cyclic number.

It is not a de Polignac number, because 167808397 - 2⁷ = 167808269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 167808397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167808307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83904198 + 83904199.

It is an arithmetic number, because the mean of its divisors is an integer number (83904199).

Almost surely, 2^167808397 is an apocalyptic number.

It is an amenable number.

167808397 is a deficient number, since it is larger than the sum of its proper divisors (1).

167808397 is an equidigital number, since it uses as much as digits as its factorization.

167808397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 167808397 is about 12954.0880420043. The cubic root of 167808397 is about 551.5749863721.

The spelling of 167808397 in words is "one hundred sixty-seven million, eight hundred eight thousand, three hundred ninety-seven".