1264116523 has 2 divisors, whose sum is σ = 1264116524. Its totient is φ = 1264116522.

The previous prime is 1264116479. The next prime is 1264116541. The reversal of 1264116523 is 3256114621.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3256114621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264116523 - 2¹³ = 1264108331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264116323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632058261 + 632058262.

It is an arithmetic number, because the mean of its divisors is an integer number (632058262).

Almost surely, 2^1264116523 is an apocalyptic number.

1264116523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264116523 is an equidigital number, since it uses as much as digits as its factorization.

1264116523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 1264116523 is about 35554.4163642156. The cubic root of 1264116523 is about 1081.2572586725.

The spelling of 1264116523 in words is "one billion, two hundred sixty-four million, one hundred sixteen thousand, five hundred twenty-three".