1264650523 has 2 divisors, whose sum is σ = 1264650524. Its totient is φ = 1264650522.

The previous prime is 1264650493. The next prime is 1264650539. The reversal of 1264650523 is 3250564621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264650523 - 2¹³ = 1264642331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264650223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632325261 + 632325262.

It is an arithmetic number, because the mean of its divisors is an integer number (632325262).

Almost surely, 2^1264650523 is an apocalyptic number.

1264650523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264650523 is an equidigital number, since it uses as much as digits as its factorization.

1264650523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 1264650523 is about 35561.9251869187. The cubic root of 1264650523 is about 1081.4094888618.

The spelling of 1264650523 in words is "one billion, two hundred sixty-four million, six hundred fifty thousand, five hundred twenty-three".