1118343240 has 256 divisors, whose sum is σ = 4408128000. Its totient is φ = 246758400.

The previous prime is 1118343229. The next prime is 1118343251. The reversal of 1118343240 is 423438111.

1118343240 is a `hidden beast` number, since 11 + 183 + 432 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1118343229) and next prime (1118343251).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216690 + ... + 221790.

It is an arithmetic number, because the mean of its divisors is an integer number (17219250).

Almost surely, 2^1118343240 is an apocalyptic number.

1118343240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118343240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204064000).

1118343240 is an abundant number, since it is smaller than the sum of its proper divisors (3289784760).

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

1118343240 is a wasteful number, since it uses less digits than its factorization.

1118343240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5147 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1118343240 is about 33441.6393138853. The cubic root of 1118343240 is about 1037.9865012111.

The spelling of 1118343240 in words is "one billion, one hundred eighteen million, three hundred forty-three thousand, two hundred forty".