11930531860 has 48 divisors (see below), whose sum is σ = 27361418112. Its totient is φ = 4343068800.

The previous prime is 11930531849. The next prime is 11930531867. The reversal of 11930531860 is 6813503911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11930531867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304686 + ... + 341605.

It is an arithmetic number, because the mean of its divisors is an integer number (570029544).

Almost surely, 2^11930531860 is an apocalyptic number.

11930531860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11930531860 is an abundant number, since it is smaller than the sum of its proper divisors (15430886252).

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

11930531860 is a wasteful number, since it uses less digits than its factorization.

11930531860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646384 (or 646382 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 11930531860 in words is "eleven billion, nine hundred thirty million, five hundred thirty-one thousand, eight hundred sixty".