1168619920 has 80 divisors (see below), whose sum is σ = 2932281072. Its totient is φ = 430571520.

The previous prime is 1168619887. The next prime is 1168619971. The reversal of 1168619920 is 299168611.

It can be written as a sum of positive squares in 8 ways, for example, as 130233744 + 1038386176 = 11412^2 + 32224^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665764 + ... + 667516.

Almost surely, 2^1168619920 is an apocalyptic number.

1168619920 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 1168619920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466140536).

1168619920 is an abundant number, since it is smaller than the sum of its proper divisors (1763661152).

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

1168619920 is a wasteful number, since it uses less digits than its factorization.

1168619920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1168619920 is about 34185.0832966661. The cubic root of 1168619920 is about 1053.3137696877.

The spelling of 1168619920 in words is "one billion, one hundred sixty-eight million, six hundred nineteen thousand, nine hundred twenty".