11897183860 has 24 divisors (see below), whose sum is σ = 25241658120. Its totient is φ = 4709812224.

The previous prime is 11897183843. The next prime is 11897183863. The reversal of 11897183860 is 6838179811.

It can be written as a sum of positive squares in 4 ways, for example, as 2838332176 + 9058851684 = 53276^2 + 95178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11897183798 and 11897183807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11897183863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3064345 + ... + 3068224.

It is an arithmetic number, because the mean of its divisors is an integer number (1051735755).

Almost surely, 2^11897183860 is an apocalyptic number.

11897183860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11897183860 is an abundant number, since it is smaller than the sum of its proper divisors (13344474260).

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

11897183860 is a wasteful number, since it uses less digits than its factorization.

11897183860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132675 (or 6132673 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 52.

The spelling of 11897183860 in words is "eleven billion, eight hundred ninety-seven million, one hundred eighty-three thousand, eight hundred sixty".