1118634547 has 2 divisors, whose sum is σ = 1118634548. Its totient is φ = 1118634546.

The previous prime is 1118634541. The next prime is 1118634593. The reversal of 1118634547 is 7454368111.

It is a weak prime.

It is an emirp because it is prime and its reverse (7454368111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1118634547 - 2¹¹ = 1118632499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118634541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559317273 + 559317274.

It is an arithmetic number, because the mean of its divisors is an integer number (559317274).

Almost surely, 2^1118634547 is an apocalyptic number.

1118634547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118634547 is an equidigital number, since it uses as much as digits as its factorization.

1118634547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 1118634547 is about 33445.9944836448. The cubic root of 1118634547 is about 1038.0766185896.

The spelling of 1118634547 in words is "one billion, one hundred eighteen million, six hundred thirty-four thousand, five hundred forty-seven".