1316662257 has 8 divisors (see below), whose sum is σ = 1858817376. Its totient is φ = 826140992.

The previous prime is 1316662253. The next prime is 1316662261. The reversal of 1316662257 is 7522666131.

It is an interprime number because it is at equal distance from previous prime (1316662253) and next prime (1316662261).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1316662257 - 2² = 1316662253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1316662253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12908403 + ... + 12908504.

It is an arithmetic number, because the mean of its divisors is an integer number (232352172).

Almost surely, 2^1316662257 is an apocalyptic number.

1316662257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1316662257 is a deficient number, since it is larger than the sum of its proper divisors (542155119).

1316662257 is a wasteful number, since it uses less digits than its factorization.

1316662257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25816927.

The product of its digits is 90720, while the sum is 39.

The square root of 1316662257 is about 36285.8409989351. The cubic root of 1316662257 is about 1096.0359404561.

The spelling of 1316662257 in words is "one billion, three hundred sixteen million, six hundred sixty-two thousand, two hundred fifty-seven".