1118571551 has 2 divisors, whose sum is σ = 1118571552. Its totient is φ = 1118571550.

The previous prime is 1118571533. The next prime is 1118571563. The reversal of 1118571551 is 1551758111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1551758111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1118571551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118571521) 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, 559285775 + 559285776.

It is an arithmetic number, because the mean of its divisors is an integer number (559285776).

Almost surely, 2^1118571551 is an apocalyptic number.

1118571551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118571551 is an equidigital number, since it uses as much as digits as its factorization.

1118571551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7000, while the sum is 35.

The square root of 1118571551 is about 33445.0527133685. The cubic root of 1118571551 is about 1038.0571317660.

The spelling of 1118571551 in words is "one billion, one hundred eighteen million, five hundred seventy-one thousand, five hundred fifty-one".