1263464513 has 8 divisors (see below), whose sum is σ = 1285073256. Its totient is φ = 1241884800.

The previous prime is 1263464491. The next prime is 1263464533. The reversal of 1263464513 is 3154643621.

It can be written as a sum of positive squares in 4 ways, for example, as 23931664 + 1239532849 = 4892^2 + 35207^2 .

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 1263464513 - 2¹⁰ = 1263463489 is a prime.

It is a super-2 number, since 2×1263464513² = 3192685151220654338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263464533) 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, 91973 + ... + 104813.

It is an arithmetic number, because the mean of its divisors is an integer number (160634157).

Almost surely, 2^1263464513 is an apocalyptic number.

It is an amenable number.

1263464513 is a deficient number, since it is larger than the sum of its proper divisors (21608743).

1263464513 is a wasteful number, since it uses less digits than its factorization.

1263464513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14515.

The product of its digits is 51840, while the sum is 35.

The square root of 1263464513 is about 35545.2459971794. The cubic root of 1263464513 is about 1081.0713286113.

The spelling of 1263464513 in words is "one billion, two hundred sixty-three million, four hundred sixty-four thousand, five hundred thirteen".