1147391983 has 2 divisors, whose sum is σ = 1147391984. Its totient is φ = 1147391982.

The previous prime is 1147391909. The next prime is 1147392013. The reversal of 1147391983 is 3891937411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1147391983 - 2²¹ = 1145294831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147391083) 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, 573695991 + 573695992.

It is an arithmetic number, because the mean of its divisors is an integer number (573695992).

Almost surely, 2^1147391983 is an apocalyptic number.

1147391983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147391983 is an equidigital number, since it uses as much as digits as its factorization.

1147391983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 46.

The square root of 1147391983 is about 33873.1749766685. The cubic root of 1147391983 is about 1046.8969559788.

The spelling of 1147391983 in words is "one billion, one hundred forty-seven million, three hundred ninety-one thousand, nine hundred eighty-three".