1264517137 has 8 divisors (see below), whose sum is σ = 1441893096. Its totient is φ = 1098584832.

The previous prime is 1264517117. The next prime is 1264517147. The reversal of 1264517137 is 7317154621.

It can be written as a sum of positive squares in 4 ways, for example, as 17297281 + 1247219856 = 4159^2 + 35316^2 .

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 1264517137 - 2¹¹ = 1264515089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264517096 and 1264517105.

It is not an unprimeable number, because it can be changed into a prime (1264517117) 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, 2860678 + ... + 2861119.

It is an arithmetic number, because the mean of its divisors is an integer number (180236637).

Almost surely, 2^1264517137 is an apocalyptic number.

1264517137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1264517137 is a deficient number, since it is larger than the sum of its proper divisors (177375959).

1264517137 is a wasteful number, since it uses less digits than its factorization.

1264517137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721827.

The product of its digits is 35280, while the sum is 37.

The square root of 1264517137 is about 35560.0497328111. The cubic root of 1264517137 is about 1081.3714678288.

The spelling of 1264517137 in words is "one billion, two hundred sixty-four million, five hundred seventeen thousand, one hundred thirty-seven".