1391158247 has 2 divisors, whose sum is σ = 1391158248. Its totient is φ = 1391158246.

The previous prime is 1391158193. The next prime is 1391158267. The reversal of 1391158247 is 7428511931.

It is a strong prime.

It is an emirp because it is prime and its reverse (7428511931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1391158247 - 2¹⁰ = 1391157223 is a prime.

It is a super-2 number, since 2×1391158247² = 3870642536392226018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391158267) 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, 695579123 + 695579124.

It is an arithmetic number, because the mean of its divisors is an integer number (695579124).

Almost surely, 2^1391158247 is an apocalyptic number.

1391158247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391158247 is an equidigital number, since it uses as much as digits as its factorization.

1391158247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 1391158247 is about 37298.2338321803. The cubic root of 1391158247 is about 1116.3289260417.

The spelling of 1391158247 in words is "one billion, three hundred ninety-one million, one hundred fifty-eight thousand, two hundred forty-seven".