169431083197 has 2 divisors, whose sum is σ = 169431083198. Its totient is φ = 169431083196.

The previous prime is 169431083191. The next prime is 169431083209. The reversal of 169431083197 is 791380134961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140123697561 + 29307385636 = 374331^2 + 171194^2 .

It is a cyclic number.

It is not a de Polignac number, because 169431083197 - 2⁷ = 169431083069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169431083191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84715541598 + 84715541599.

It is an arithmetic number, because the mean of its divisors is an integer number (84715541599).

Almost surely, 2^169431083197 is an apocalyptic number.

It is an amenable number.

169431083197 is a deficient number, since it is larger than the sum of its proper divisors (1).

169431083197 is an equidigital number, since it uses as much as digits as its factorization.

169431083197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 169431083197 in words is "one hundred sixty-nine billion, four hundred thirty-one million, eighty-three thousand, one hundred ninety-seven".