1965238423 has 2 divisors, whose sum is σ = 1965238424. Its totient is φ = 1965238422.

The previous prime is 1965238409. The next prime is 1965238433. The reversal of 1965238423 is 3248325691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1965238423 - 2¹⁷ = 1965107351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1965238423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1965238433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982619211 + 982619212.

It is an arithmetic number, because the mean of its divisors is an integer number (982619212).

Almost surely, 2^1965238423 is an apocalyptic number.

1965238423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1965238423 is an equidigital number, since it uses as much as digits as its factorization.

1965238423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 1965238423 is about 44331.0097223151. The cubic root of 1965238423 is about 1252.5788727799.

The spelling of 1965238423 in words is "one billion, nine hundred sixty-five million, two hundred thirty-eight thousand, four hundred twenty-three".