1312629747 has 32 divisors (see below), whose sum is σ = 2094978816. Its totient is φ = 720470400.

The previous prime is 1312629707. The next prime is 1312629749. The reversal of 1312629747 is 7479262131.

It is not a de Polignac number, because 1312629747 - 2¹⁴ = 1312613363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312629699 and 1312629708.

It is not an unprimeable number, because it can be changed into a prime (1312629749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6129 + ... + 51602.

It is an arithmetic number, because the mean of its divisors is an integer number (65468088).

Almost surely, 2^1312629747 is an apocalyptic number.

1312629747 is a deficient number, since it is larger than the sum of its proper divisors (782349069).

1312629747 is a wasteful number, since it uses less digits than its factorization.

1312629747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57811.

The product of its digits is 127008, while the sum is 42.

The square root of 1312629747 is about 36230.2324999440. The cubic root of 1312629747 is about 1094.9158618448.

The spelling of 1312629747 in words is "one billion, three hundred twelve million, six hundred twenty-nine thousand, seven hundred forty-seven".