1100018392820 has 12 divisors (see below), whose sum is σ = 2310038624964. Its totient is φ = 440007357120.

The previous prime is 1100018392817. The next prime is 1100018392841. The reversal of 1100018392820 is 282938100011.

It can be written as a sum of positive squares in 2 ways, for example, as 832495657744 + 267522735076 = 912412^2 + 517226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27500459801 + ... + 27500459840.

It is an arithmetic number, because the mean of its divisors is an integer number (192503218747).

Almost surely, 2^{1100018392820} is an apocalyptic number.

1100018392820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100018392820 is an abundant number, since it is smaller than the sum of its proper divisors (1210020232144).

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

1100018392820 is a wasteful number, since it uses less digits than its factorization.

1100018392820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55000919650 (or 55000919648 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 1100018392820 in words is "one trillion, one hundred billion, eighteen million, three hundred ninety-two thousand, eight hundred twenty".