1118232551 has 2 divisors, whose sum is σ = 1118232552. Its totient is φ = 1118232550.

The previous prime is 1118232491. The next prime is 1118232559. The reversal of 1118232551 is 1552328111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1552328111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1118232551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118232559) 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, 559116275 + 559116276.

It is an arithmetic number, because the mean of its divisors is an integer number (559116276).

Almost surely, 2^1118232551 is an apocalyptic number.

1118232551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118232551 is an equidigital number, since it uses as much as digits as its factorization.

1118232551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 29.

The square root of 1118232551 is about 33439.9843151877. The cubic root of 1118232551 is about 1037.9522548740.

The spelling of 1118232551 in words is "one billion, one hundred eighteen million, two hundred thirty-two thousand, five hundred fifty-one".