97100189 has 2 divisors, whose sum is σ = 97100190. Its totient is φ = 97100188.

The previous prime is 97100183. The next prime is 97100191. The reversal of 97100189 is 98100179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96864964 + 235225 = 9842^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 97100189 - 2²⁴ = 80322973 is a prime.

It is a Sophie Germain prime.

Together with 97100191, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97100183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48550094 + 48550095.

It is an arithmetic number, because the mean of its divisors is an integer number (48550095).

Almost surely, 2^97100189 is an apocalyptic number.

It is an amenable number.

97100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

97100189 is an equidigital number, since it uses as much as digits as its factorization.

97100189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 97100189 is about 9853.9428149345. The cubic root of 97100189 is about 459.6282267079.

The spelling of 97100189 in words is "ninety-seven million, one hundred thousand, one hundred eighty-nine".