1157843287 has 2 divisors, whose sum is σ = 1157843288. Its totient is φ = 1157843286.

The previous prime is 1157843251. The next prime is 1157843341. The reversal of 1157843287 is 7823487511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1157843287 - 2¹⁵ = 1157810519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157843587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578921643 + 578921644.

It is an arithmetic number, because the mean of its divisors is an integer number (578921644).

Almost surely, 2^1157843287 is an apocalyptic number.

1157843287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157843287 is an equidigital number, since it uses as much as digits as its factorization.

1157843287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 1157843287 is about 34027.0963645151. The cubic root of 1157843287 is about 1050.0659934334.

The spelling of 1157843287 in words is "one billion, one hundred fifty-seven million, eight hundred forty-three thousand, two hundred eighty-seven".