1670009111 has 2 divisors, whose sum is σ = 1670009112. Its totient is φ = 1670009110.

The previous prime is 1670009069. The next prime is 1670009129. The reversal of 1670009111 is 1119000761.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1670009111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1670009141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835004555 + 835004556.

It is an arithmetic number, because the mean of its divisors is an integer number (835004556).

Almost surely, 2^1670009111 is an apocalyptic number.

1670009111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670009111 is an equidigital number, since it uses as much as digits as its factorization.

1670009111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 1670009111 is about 40865.7449583389. The cubic root of 1670009111 is about 1186.4231534458.

Adding to 1670009111 its reverse (1119000761), we get a palindrome (2789009872).

The spelling of 1670009111 in words is "one billion, six hundred seventy million, nine thousand, one hundred eleven".