1345689011 has 2 divisors, whose sum is σ = 1345689012. Its totient is φ = 1345689010.

The previous prime is 1345688963. The next prime is 1345689019. The reversal of 1345689011 is 1109865431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345689011 - 2⁶ = 1345688947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1345689019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672844505 + 672844506.

It is an arithmetic number, because the mean of its divisors is an integer number (672844506).

Almost surely, 2^1345689011 is an apocalyptic number.

1345689011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345689011 is an equidigital number, since it uses as much as digits as its factorization.

1345689011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1345689011 is about 36683.6341029620. The cubic root of 1345689011 is about 1104.0317640667.

The spelling of 1345689011 in words is "one billion, three hundred forty-five million, six hundred eighty-nine thousand, eleven".