1020188277198 has 24 divisors (see below), whose sum is σ = 2213792963928. Its totient is φ = 339541985232.

The previous prime is 1020188277197. The next prime is 1020188277289. The reversal of 1020188277198 is 8917728810201.

1020188277198 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 188 + 277 + 198 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020188277191) 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, 43385740 + ... + 43409247.

It is an arithmetic number, because the mean of its divisors is an integer number (92241373497).

Almost surely, 2^{1020188277198} is an apocalyptic number.

1020188277198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1020188277198 is an abundant number, since it is smaller than the sum of its proper divisors (1193604686730).

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

1020188277198 is a wasteful number, since it uses less digits than its factorization.

1020188277198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86795648 (or 86795645 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 54.

The spelling of 1020188277198 in words is "one trillion, twenty billion, one hundred eighty-eight million, two hundred seventy-seven thousand, one hundred ninety-eight".