1271164045 has 16 divisors (see below), whose sum is σ = 1567837440. Its totient is φ = 988680384.

The previous prime is 1271164009. The next prime is 1271164057. The reversal of 1271164045 is 5404611721.

It is a cyclic number.

It is not a de Polignac number, because 1271164045 - 2⁷ = 1271163917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1271163998 and 1271164016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405996 + ... + 409114.

It is an arithmetic number, because the mean of its divisors is an integer number (97989840).

Almost surely, 2^1271164045 is an apocalyptic number.

It is an amenable number.

1271164045 is a deficient number, since it is larger than the sum of its proper divisors (296673395).

1271164045 is a wasteful number, since it uses less digits than its factorization.

1271164045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1271164045 is about 35653.3875669620. The cubic root of 1271164045 is about 1083.2628931451.

Adding to 1271164045 its reverse (5404611721), we get a palindrome (6675775766).

The spelling of 1271164045 in words is "one billion, two hundred seventy-one million, one hundred sixty-four thousand, forty-five".