1264166105 has 4 divisors (see below), whose sum is σ = 1516999332. Its totient is φ = 1011332880.

The previous prime is 1264166093. The next prime is 1264166107. The reversal of 1264166105 is 5016614621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5016614621 = 9817 ⋅511013.

It can be written as a sum of positive squares in 2 ways, for example, as 559369801 + 704796304 = 23651^2 + 26548^2 .

It is not a de Polignac number, because 1264166105 - 2¹⁰ = 1264165081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264166107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126416606 + ... + 126416615.

It is an arithmetic number, because the mean of its divisors is an integer number (379249833).

Almost surely, 2^1264166105 is an apocalyptic number.

It is an amenable number.

1264166105 is a deficient number, since it is larger than the sum of its proper divisors (252833227).

1264166105 is an equidigital number, since it uses as much as digits as its factorization.

1264166105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252833226.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1264166105 is about 35555.1136265939. The cubic root of 1264166105 is about 1081.2713950793.

The spelling of 1264166105 in words is "one billion, two hundred sixty-four million, one hundred sixty-six thousand, one hundred five".