167799493 has 2 divisors, whose sum is σ = 167799494. Its totient is φ = 167799492.

The previous prime is 167799491. The next prime is 167799509. The reversal of 167799493 is 394997761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84953089 + 82846404 = 9217^2 + 9102^2 .

It is an emirp because it is prime and its reverse (394997761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167799493 - 2¹ = 167799491 is a prime.

Together with 167799491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167799491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83899746 + 83899747.

It is an arithmetic number, because the mean of its divisors is an integer number (83899747).

Almost surely, 2^167799493 is an apocalyptic number.

It is an amenable number.

167799493 is a deficient number, since it is larger than the sum of its proper divisors (1).

167799493 is an equidigital number, since it uses as much as digits as its factorization.

167799493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 55.

The square root of 167799493 is about 12953.7443621526. The cubic root of 167799493 is about 551.5652305819.

It can be divided in two parts, 167 and 799493, that multiplied together give a palindrome (133515331).

The spelling of 167799493 in words is "one hundred sixty-seven million, seven hundred ninety-nine thousand, four hundred ninety-three".