1118985600 has 192 divisors, whose sum is σ = 3709026000. Its totient is φ = 296509440.

The previous prime is 1118985493. The next prime is 1118985613. The reversal of 1118985600 is 65898111.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2198146 + ... + 2198654.

Almost surely, 2^1118985600 is an apocalyptic number.

1118985600 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 1118985600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1854513000).

1118985600 is an abundant number, since it is smaller than the sum of its proper divisors (2590040400).

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

1118985600 is a wasteful number, since it uses less digits than its factorization.

1118985600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 39.

The square root of 1118985600 is about 33451.2421294038. The cubic root of 1118985600 is about 1038.1851979279.

The spelling of 1118985600 in words is "one billion, one hundred eighteen million, nine hundred eighty-five thousand, six hundred".