1317607641 has 20 divisors (see below), whose sum is σ = 2249461632. Its totient is φ = 752918328.

The previous prime is 1317607639. The next prime is 1317607673. The reversal of 1317607641 is 1467067131.

1317607641 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 6 + 0 + 7 + 641 = 666.

It is not a de Polignac number, because 1317607641 - 2¹ = 1317607639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317607596 and 1317607605.

It is not an unprimeable number, because it can be changed into a prime (1317607241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1161345 + ... + 1162478.

Almost surely, 2^1317607641 is an apocalyptic number.

It is an amenable number.

1317607641 is a deficient number, since it is larger than the sum of its proper divisors (931853991).

1317607641 is an equidigital number, since it uses as much as digits as its factorization.

1317607641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323842 (or 2323833 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1317607641 is about 36298.8655607858. The cubic root of 1317607641 is about 1096.2982013202.

The spelling of 1317607641 in words is "one billion, three hundred seventeen million, six hundred seven thousand, six hundred forty-one".