1118082400 has 36 divisors (see below), whose sum is σ = 2729520612. Its totient is φ = 447232640.

The previous prime is 1118082397. The next prime is 1118082409. The reversal of 1118082400 is 42808111.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118082409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 698002 + ... + 699601.

It is an arithmetic number, because the mean of its divisors is an integer number (75820017).

Almost surely, 2^1118082400 is an apocalyptic number.

1118082400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118082400 is an abundant number, since it is smaller than the sum of its proper divisors (1611438212).

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

1118082400 is a wasteful number, since it uses less digits than its factorization.

1118082400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397623 (or 1397610 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 1118082400 is about 33437.7391580232. The cubic root of 1118082400 is about 1037.9057956812.

The spelling of 1118082400 in words is "one billion, one hundred eighteen million, eighty-two thousand, four hundred".