1423539823 has 2 divisors, whose sum is σ = 1423539824. Its totient is φ = 1423539822.

The previous prime is 1423539763. The next prime is 1423539839. The reversal of 1423539823 is 3289353241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423539823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423533823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711769911 + 711769912.

It is an arithmetic number, because the mean of its divisors is an integer number (711769912).

Almost surely, 2^1423539823 is an apocalyptic number.

1423539823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423539823 is an equidigital number, since it uses as much as digits as its factorization.

1423539823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 1423539823 is about 37729.8267024910. The cubic root of 1423539823 is about 1124.9240634835.

The spelling of 1423539823 in words is "one billion, four hundred twenty-three million, five hundred thirty-nine thousand, eight hundred twenty-three".