1147159187 has 2 divisors, whose sum is σ = 1147159188. Its totient is φ = 1147159186.

The previous prime is 1147159159. The next prime is 1147159249. The reversal of 1147159187 is 7819517411.

It is a weak prime.

It is an emirp because it is prime and its reverse (7819517411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147159187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147159087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573579593 + 573579594.

It is an arithmetic number, because the mean of its divisors is an integer number (573579594).

Almost surely, 2^1147159187 is an apocalyptic number.

1147159187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147159187 is an equidigital number, since it uses as much as digits as its factorization.

1147159187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 44.

The square root of 1147159187 is about 33869.7385139006. The cubic root of 1147159187 is about 1046.8261490498.

The spelling of 1147159187 in words is "one billion, one hundred forty-seven million, one hundred fifty-nine thousand, one hundred eighty-seven".