12186903890 has 32 divisors (see below), whose sum is σ = 25086015360. Its totient is φ = 4175731584.

The previous prime is 12186903889. The next prime is 12186903893. The reversal of 12186903890 is 9830968121.

12186903890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12186903893) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58529 + ... + 166731.

It is an arithmetic number, because the mean of its divisors is an integer number (783937980).

Almost surely, 2^12186903890 is an apocalyptic number.

12186903890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12186903890 is an abundant number, since it is smaller than the sum of its proper divisors (12899111470).

12186903890 is a wasteful number, since it uses less digits than its factorization.

12186903890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109826.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 12186903890 in words is "twelve billion, one hundred eighty-six million, nine hundred three thousand, eight hundred ninety".