1121964120 has 96 divisors (see below), whose sum is σ = 3690414000. Its totient is φ = 295577856.

The previous prime is 1121964091. The next prime is 1121964133. The reversal of 1121964120 is 214691211.

1121964120 is a `hidden beast` number, since 1 + 1 + 2 + 19 + 641 + 2 + 0 = 666.

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, 11106 + ... + 48654.

Almost surely, 2^1121964120 is an apocalyptic number.

1121964120 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 1121964120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1845207000).

1121964120 is an abundant number, since it is smaller than the sum of its proper divisors (2568449880).

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

1121964120 is a wasteful number, since it uses less digits than its factorization.

1121964120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37649 (or 37642 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1121964120 is about 33495.7328625603. The cubic root of 1121964120 is about 1039.1055302262.

The spelling of 1121964120 in words is "one billion, one hundred twenty-one million, nine hundred sixty-four thousand, one hundred twenty".