1121836400 has 30 divisors (see below), whose sum is σ = 2695212912. Its totient is φ = 448734400.

The previous prime is 1121836343. The next prime is 1121836453. The reversal of 1121836400 is 46381211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121836400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1401896 + ... + 1402695.

Almost surely, 2^1121836400 is an apocalyptic number.

1121836400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121836400 is an abundant number, since it is smaller than the sum of its proper divisors (1573376512).

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

1121836400 is a wasteful number, since it uses less digits than its factorization.

1121836400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804609 (or 2804598 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1121836400 is about 33493.8262967968. The cubic root of 1121836400 is about 1039.0660994957.

The spelling of 1121836400 in words is "one billion, one hundred twenty-one million, eight hundred thirty-six thousand, four hundred".