1264426259 has 2 divisors, whose sum is σ = 1264426260. Its totient is φ = 1264426258.

The previous prime is 1264426253. The next prime is 1264426283. The reversal of 1264426259 is 9526244621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1264426259 - 2²⁰ = 1263377683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264426253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632213129 + 632213130.

It is an arithmetic number, because the mean of its divisors is an integer number (632213130).

Almost surely, 2^1264426259 is an apocalyptic number.

1264426259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264426259 is an equidigital number, since it uses as much as digits as its factorization.

1264426259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 1264426259 is about 35558.7718994906. The cubic root of 1264426259 is about 1081.3455619639.

The spelling of 1264426259 in words is "one billion, two hundred sixty-four million, four hundred twenty-six thousand, two hundred fifty-nine".