1316673769 has 2 divisors, whose sum is σ = 1316673770. Its totient is φ = 1316673768.

The previous prime is 1316673751. The next prime is 1316673781. The reversal of 1316673769 is 9673766131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958707369 + 357966400 = 30963^2 + 18920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316673769 - 2⁷ = 1316673641 is a prime.

It is a super-2 number, since 2×1316673769² = 3467259627945330722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1316670769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658336884 + 658336885.

It is an arithmetic number, because the mean of its divisors is an integer number (658336885).

Almost surely, 2^1316673769 is an apocalyptic number.

It is an amenable number.

1316673769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316673769 is an equidigital number, since it uses as much as digits as its factorization.

1316673769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 49.

The square root of 1316673769 is about 36285.9996279557. Note that the first 3 decimals coincide. The cubic root of 1316673769 is about 1096.0391347779.

The spelling of 1316673769 in words is "one billion, three hundred sixteen million, six hundred seventy-three thousand, seven hundred sixty-nine".