18012986826 has 16 divisors (see below), whose sum is σ = 36616564128. Its totient is φ = 5905897200.

The previous prime is 18012986813. The next prime is 18012986861. The reversal of 18012986826 is 62868921081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24607540 + ... + 24608271.

It is an arithmetic number, because the mean of its divisors is an integer number (2288535258).

Almost surely, 2^18012986826 is an apocalyptic number.

18012986826 is an abundant number, since it is smaller than the sum of its proper divisors (18603577302).

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

18012986826 is a wasteful number, since it uses less digits than its factorization.

18012986826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49215877.

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 18012986826 in words is "eighteen billion, twelve million, nine hundred eighty-six thousand, eight hundred twenty-six".