1118498831 has 2 divisors, whose sum is σ = 1118498832. Its totient is φ = 1118498830.

The previous prime is 1118498807. The next prime is 1118498837. The reversal of 1118498831 is 1388948111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1118498831 - 2³⁰ = 44757007 is a prime.

It is a super-2 number, since 2×1118498831² = 2502079269896733122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118498837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559249415 + 559249416.

It is an arithmetic number, because the mean of its divisors is an integer number (559249416).

Almost surely, 2^1118498831 is an apocalyptic number.

1118498831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118498831 is an equidigital number, since it uses as much as digits as its factorization.

1118498831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 44.

The square root of 1118498831 is about 33443.9655393914. The cubic root of 1118498831 is about 1038.0346360659.

The spelling of 1118498831 in words is "one billion, one hundred eighteen million, four hundred ninety-eight thousand, eight hundred thirty-one".