1264013487 has 12 divisors (see below), whose sum is σ = 1991778984. Its totient is φ = 766068720.

The previous prime is 1264013479. The next prime is 1264013519. The reversal of 1264013487 is 7843104621.

1264013487 is a `hidden beast` number, since 1 + 2 + 640 + 1 + 3 + 4 + 8 + 7 = 666.

It is not a de Polignac number, because 1264013487 - 2³ = 1264013479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264013417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6383808 + ... + 6384005.

It is an arithmetic number, because the mean of its divisors is an integer number (165981582).

Almost surely, 2^1264013487 is an apocalyptic number.

1264013487 is a deficient number, since it is larger than the sum of its proper divisors (727765497).

1264013487 is a wasteful number, since it uses less digits than its factorization.

1264013487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767830 (or 12767827 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1264013487 is about 35552.9673445129. The cubic root of 1264013487 is about 1081.2278807241.

The spelling of 1264013487 in words is "one billion, two hundred sixty-four million, thirteen thousand, four hundred eighty-seven".