1670317969 has 2 divisors, whose sum is σ = 1670317970. Its totient is φ = 1670317968.

The previous prime is 1670317967. The next prime is 1670317991. The reversal of 1670317969 is 9697130761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1465970944 + 204347025 = 38288^2 + 14295^2 .

It is an emirp because it is prime and its reverse (9697130761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1670317969 - 2¹ = 1670317967 is a prime.

It is a super-2 number, since 2×1670317969² = 5579924235128569922, which contains 22 as substring.

Together with 1670317967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1670317967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835158984 + 835158985.

It is an arithmetic number, because the mean of its divisors is an integer number (835158985).

Almost surely, 2^1670317969 is an apocalyptic number.

It is an amenable number.

1670317969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670317969 is an equidigital number, since it uses as much as digits as its factorization.

1670317969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 1670317969 is about 40869.5237187810. The cubic root of 1670317969 is about 1186.4962895128.

The spelling of 1670317969 in words is "one billion, six hundred seventy million, three hundred seventeen thousand, nine hundred sixty-nine".