97108189 has 2 divisors, whose sum is σ = 97108190. Its totient is φ = 97108188.

The previous prime is 97108181. The next prime is 97108237. The reversal of 97108189 is 98180179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 42968025 = 7358^2 + 6555^2 .

It is an emirp because it is prime and its reverse (98180179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97108189 - 2³ = 97108181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97108181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48554094 + 48554095.

It is an arithmetic number, because the mean of its divisors is an integer number (48554095).

Almost surely, 2^97108189 is an apocalyptic number.

It is an amenable number.

97108189 is a deficient number, since it is larger than the sum of its proper divisors (1).

97108189 is an equidigital number, since it uses as much as digits as its factorization.

97108189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 97108189 is about 9854.3487354568. The cubic root of 97108189 is about 459.6408491510.

The spelling of 97108189 in words is "ninety-seven million, one hundred eight thousand, one hundred eighty-nine".