489156523 has 2 divisors, whose sum is σ = 489156524. Its totient is φ = 489156522.

The previous prime is 489156467. The next prime is 489156529. The reversal of 489156523 is 325651984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489156523 - 2²¹ = 487059371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489156523.

It is not a weakly prime, because it can be changed into another prime (489156529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244578261 + 244578262.

It is an arithmetic number, because the mean of its divisors is an integer number (244578262).

Almost surely, 2^489156523 is an apocalyptic number.

489156523 is a deficient number, since it is larger than the sum of its proper divisors (1).

489156523 is an equidigital number, since it uses as much as digits as its factorization.

489156523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 489156523 is about 22116.8832117005. The cubic root of 489156523 is about 787.9208926015.

The spelling of 489156523 in words is "four hundred eighty-nine million, one hundred fifty-six thousand, five hundred twenty-three".