1423076509 has 2 divisors, whose sum is σ = 1423076510. Its totient is φ = 1423076508.

The previous prime is 1423076471. The next prime is 1423076513. The reversal of 1423076509 is 9056703241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1046328409 + 376748100 = 32347^2 + 19410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423076509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423076569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711538254 + 711538255.

It is an arithmetic number, because the mean of its divisors is an integer number (711538255).

Almost surely, 2^1423076509 is an apocalyptic number.

It is an amenable number.

1423076509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423076509 is an equidigital number, since it uses as much as digits as its factorization.

1423076509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1423076509 is about 37723.6863124483. The cubic root of 1423076509 is about 1124.8020086797.

The spelling of 1423076509 in words is "one billion, four hundred twenty-three million, seventy-six thousand, five hundred nine".