171964423 has 2 divisors, whose sum is σ = 171964424. Its totient is φ = 171964422.

The previous prime is 171964393. The next prime is 171964427. The reversal of 171964423 is 324469171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171964423 - 2¹³ = 171956231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171964427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85982211 + 85982212.

It is an arithmetic number, because the mean of its divisors is an integer number (85982212).

Almost surely, 2^171964423 is an apocalyptic number.

171964423 is a deficient number, since it is larger than the sum of its proper divisors (1).

171964423 is an equidigital number, since it uses as much as digits as its factorization.

171964423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 171964423 is about 13113.5206180491. The cubic root of 171964423 is about 556.0914301533.

The spelling of 171964423 in words is "one hundred seventy-one million, nine hundred sixty-four thousand, four hundred twenty-three".