198792986020 has 48 divisors (see below), whose sum is σ = 442277257968. Its totient is φ = 74796503040.

The previous prime is 198792986017. The next prime is 198792986023. The reversal of 198792986020 is 20689297891.

It is an interprime number because it is at equal distance from previous prime (198792986017) and next prime (198792986023).

It can be written as a sum of positive squares in 8 ways, for example, as 903242916 + 197889743104 = 30054^2 + 444848^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198792986020.

It is not an unprimeable number, because it can be changed into a prime (198792986023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424024 + ... + 759856.

It is an arithmetic number, because the mean of its divisors is an integer number (9214109541).

Almost surely, 2^198792986020 is an apocalyptic number.

198792986020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198792986020 is an abundant number, since it is smaller than the sum of its proper divisors (243484271948).

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

198792986020 is a wasteful number, since it uses less digits than its factorization.

198792986020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337600 (or 337598 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 198792986020 in words is "one hundred ninety-eight billion, seven hundred ninety-two million, nine hundred eighty-six thousand, twenty".