1340164139 has 2 divisors, whose sum is σ = 1340164140. Its totient is φ = 1340164138.

The previous prime is 1340164129. The next prime is 1340164141. The reversal of 1340164139 is 9314610431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340164139 - 2⁴ = 1340164123 is a prime.

It is a super-2 number, since 2×1340164139² = 3592079838923222642, which contains 22 as substring.

Together with 1340164141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1340164129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670082069 + 670082070.

It is an arithmetic number, because the mean of its divisors is an integer number (670082070).

Almost surely, 2^1340164139 is an apocalyptic number.

1340164139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340164139 is an equidigital number, since it uses as much as digits as its factorization.

1340164139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1340164139 is about 36608.2523346854. The cubic root of 1340164139 is about 1102.5187842742.

The spelling of 1340164139 in words is "one billion, three hundred forty million, one hundred sixty-four thousand, one hundred thirty-nine".