1118363820 has 48 divisors (see below), whose sum is σ = 3578765568. Its totient is φ = 255625920.

The previous prime is 1118363797. The next prime is 1118363839. The reversal of 1118363820 is 283638111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330966 + ... + 1331805.

It is an arithmetic number, because the mean of its divisors is an integer number (74557616).

Almost surely, 2^1118363820 is an apocalyptic number.

1118363820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118363820 is an abundant number, since it is smaller than the sum of its proper divisors (2460401748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1118363820 is a wasteful number, since it uses less digits than its factorization.

1118363820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662790 (or 2662788 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1118363820 is about 33441.9470126965. The cubic root of 1118363820 is about 1037.9928682578.

The spelling of 1118363820 in words is "one billion, one hundred eighteen million, three hundred sixty-three thousand, eight hundred twenty".