1264284161 has 8 divisors (see below), whose sum is σ = 1475639040. Its totient is φ = 1060615008.

The previous prime is 1264284157. The next prime is 1264284167. The reversal of 1264284161 is 1614824621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1264284161 - 2² = 1264284157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1264284167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1921076 + ... + 1921733.

It is an arithmetic number, because the mean of its divisors is an integer number (184454880).

Almost surely, 2^1264284161 is an apocalyptic number.

It is an amenable number.

1264284161 is a deficient number, since it is larger than the sum of its proper divisors (211354879).

1264284161 is an equidigital number, since it uses as much as digits as its factorization.

1264284161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842863.

The product of its digits is 18432, while the sum is 35.

The square root of 1264284161 is about 35556.7737709708. The cubic root of 1264284161 is about 1081.3050527350.

The spelling of 1264284161 in words is "one billion, two hundred sixty-four million, two hundred eighty-four thousand, one hundred sixty-one".