1264636105 has 16 divisors (see below), whose sum is σ = 1599252480. Its totient is φ = 957370752.

The previous prime is 1264636073. The next prime is 1264636133. The reversal of 1264636105 is 5016364621.

It is a cyclic number.

It is not a de Polignac number, because 1264636105 - 2⁵ = 1264636073 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 81912 + ... + 96118.

It is an arithmetic number, because the mean of its divisors is an integer number (99953280).

Almost surely, 2^1264636105 is an apocalyptic number.

It is an amenable number.

1264636105 is a deficient number, since it is larger than the sum of its proper divisors (334616375).

1264636105 is a wasteful number, since it uses less digits than its factorization.

1264636105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1264636105 is about 35561.7224695318. The cubic root of 1264636105 is about 1081.4053792096.

The spelling of 1264636105 in words is "one billion, two hundred sixty-four million, six hundred thirty-six thousand, one hundred five".