1391181159 has 16 divisors (see below), whose sum is σ = 1966798080. Its totient is φ = 872222400.

The previous prime is 1391181157. The next prime is 1391181173. The reversal of 1391181159 is 9511811931.

It is not a de Polignac number, because 1391181159 - 2¹ = 1391181157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391181157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81267 + ... + 96884.

It is an arithmetic number, because the mean of its divisors is an integer number (122924880).

Almost surely, 2^1391181159 is an apocalyptic number.

1391181159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1391181159 is a deficient number, since it is larger than the sum of its proper divisors (575616921).

1391181159 is a wasteful number, since it uses less digits than its factorization.

1391181159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178310.

The product of its digits is 9720, while the sum is 39.

The square root of 1391181159 is about 37298.5409768264. The cubic root of 1391181159 is about 1116.3350545532.

The spelling of 1391181159 in words is "one billion, three hundred ninety-one million, one hundred eighty-one thousand, one hundred fifty-nine".