168347953 has 2 divisors, whose sum is σ = 168347954. Its totient is φ = 168347952.

The previous prime is 168347941. The next prime is 168348023. The reversal of 168347953 is 359743861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168169024 + 178929 = 12968^2 + 423^2 .

It is an emirp because it is prime and its reverse (359743861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168347953 - 2¹³ = 168339761 is a prime.

It is not a weakly prime, because it can be changed into another prime (168342953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84173976 + 84173977.

It is an arithmetic number, because the mean of its divisors is an integer number (84173977).

Almost surely, 2^168347953 is an apocalyptic number.

It is an amenable number.

168347953 is a deficient number, since it is larger than the sum of its proper divisors (1).

168347953 is an equidigital number, since it uses as much as digits as its factorization.

168347953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 168347953 is about 12974.8970323467. The cubic root of 168347953 is about 552.1655154169.

The spelling of 168347953 in words is "one hundred sixty-eight million, three hundred forty-seven thousand, nine hundred fifty-three".