1818131032428 has 24 divisors (see below), whose sum is σ = 4388592148080. Its totient is φ = 585145619520.

The previous prime is 1818131032273. The next prime is 1818131032439. The reversal of 1818131032428 is 8242301318181.

It is a self number, because there is not a number n which added to its sum of digits gives 1818131032428.

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, 2612256883 + ... + 2612257578.

It is an arithmetic number, because the mean of its divisors is an integer number (182858006170).

Almost surely, 2^{1818131032428} is an apocalyptic number.

It is an amenable number.

1818131032428 is an abundant number, since it is smaller than the sum of its proper divisors (2570461115652).

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

1818131032428 is a wasteful number, since it uses less digits than its factorization.

1818131032428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224514497 (or 5224514495 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 1818131032428 in words is "one trillion, eight hundred eighteen billion, one hundred thirty-one million, thirty-two thousand, four hundred twenty-eight".