1340235179 has 2 divisors, whose sum is σ = 1340235180. Its totient is φ = 1340235178.

The previous prime is 1340235163. The next prime is 1340235187. The reversal of 1340235179 is 9715320431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340235179 - 2⁴ = 1340235163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340235109) 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 as a sum of consecutive naturals, namely, 670117589 + 670117590.

It is an arithmetic number, because the mean of its divisors is an integer number (670117590).

Almost surely, 2^1340235179 is an apocalyptic number.

1340235179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340235179 is an equidigital number, since it uses as much as digits as its factorization.

1340235179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1340235179 is about 36609.2225948599. Note that the first 3 decimals coincide. The cubic root of 1340235179 is about 1102.5382648607.

The spelling of 1340235179 in words is "one billion, three hundred forty million, two hundred thirty-five thousand, one hundred seventy-nine".