1391518159 has 2 divisors, whose sum is σ = 1391518160. Its totient is φ = 1391518158.

The previous prime is 1391518129. The next prime is 1391518169. The reversal of 1391518159 is 9518151931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1391518159 - 2¹¹ = 1391516111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391518129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695759079 + 695759080.

It is an arithmetic number, because the mean of its divisors is an integer number (695759080).

Almost surely, 2^1391518159 is an apocalyptic number.

1391518159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391518159 is an equidigital number, since it uses as much as digits as its factorization.

1391518159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 43.

The square root of 1391518159 is about 37303.0583062569. The cubic root of 1391518159 is about 1116.4251876840.

The spelling of 1391518159 in words is "one billion, three hundred ninety-one million, five hundred eighteen thousand, one hundred fifty-nine".