1317766641 has 32 divisors (see below), whose sum is σ = 1920758400. Its totient is φ = 800432640.

The previous prime is 1317766607. The next prime is 1317766643. The reversal of 1317766641 is 1466677131.

1317766641 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1317766641 - 2¹⁸ = 1317504497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317766593 and 1317766602.

It is not an unprimeable number, because it can be changed into a prime (1317766643) 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, 463075 + ... + 465911.

It is an arithmetic number, because the mean of its divisors is an integer number (60023700).

Almost surely, 2^1317766641 is an apocalyptic number.

It is an amenable number.

1317766641 is a deficient number, since it is larger than the sum of its proper divisors (602991759).

1317766641 is a wasteful number, since it uses less digits than its factorization.

1317766641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169.

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

The square root of 1317766641 is about 36301.0556458073. The cubic root of 1317766641 is about 1096.3422975032.

The spelling of 1317766641 in words is "one billion, three hundred seventeen million, seven hundred sixty-six thousand, six hundred forty-one".