12849990858 has 24 divisors (see below), whose sum is σ = 27844255296. Its totient is φ = 4282929000.

The previous prime is 12849990847. The next prime is 12849990859. The reversal of 12849990858 is 85809994821.

12849990858 is a `hidden beast` number, since 1 + 2 + 8 + 499 + 90 + 8 + 58 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12849990795 and 12849990804.

It is not an unprimeable number, because it can be changed into a prime (12849990859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213183 + ... + 266733.

It is an arithmetic number, because the mean of its divisors is an integer number (1160177304).

Almost surely, 2^12849990858 is an apocalyptic number.

12849990858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12849990858 is an abundant number, since it is smaller than the sum of its proper divisors (14994264438).

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

12849990858 is a wasteful number, since it uses less digits than its factorization.

12849990858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66890 (or 66887 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 12849990858 in words is "twelve billion, eight hundred forty-nine million, nine hundred ninety thousand, eight hundred fifty-eight".