1312689466 has 64 divisors (see below), whose sum is σ = 2315174400. Its totient is φ = 552484800.

The previous prime is 1312689449. The next prime is 1312689487. The reversal of 1312689466 is 6649862131.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1618201 + ... + 1619011.

It is an arithmetic number, because the mean of its divisors is an integer number (36174600).

Almost surely, 2^1312689466 is an apocalyptic number.

1312689466 is a deficient number, since it is larger than the sum of its proper divisors (1002484934).

1312689466 is a wasteful number, since it uses less digits than its factorization.

1312689466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

The product of its digits is 373248, while the sum is 46.

The square root of 1312689466 is about 36231.0566503380. The cubic root of 1312689466 is about 1094.9324662449.

The spelling of 1312689466 in words is "one billion, three hundred twelve million, six hundred eighty-nine thousand, four hundred sixty-six".