1340617259 has 2 divisors, whose sum is σ = 1340617260. Its totient is φ = 1340617258.

The previous prime is 1340617253. The next prime is 1340617277. The reversal of 1340617259 is 9527160431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340617259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340617253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670308629 + 670308630.

It is an arithmetic number, because the mean of its divisors is an integer number (670308630).

Almost surely, 2^1340617259 is an apocalyptic number.

1340617259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340617259 is an equidigital number, since it uses as much as digits as its factorization.

1340617259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1340617259 is about 36614.4405801864. The cubic root of 1340617259 is about 1102.6430270203.

The spelling of 1340617259 in words is "one billion, three hundred forty million, six hundred seventeen thousand, two hundred fifty-nine".