18812870752242 has 64 divisors (see below), whose sum is σ = 43813193518080. Its totient is φ = 5273567342784.

The previous prime is 18812870752241. The next prime is 18812870752267. The reversal of 18812870752242 is 24225707821881.

It is a super-3 number, since 3×18812870752242³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18812870752241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145344309 + ... + 145473687.

It is an arithmetic number, because the mean of its divisors is an integer number (684581148720).

Almost surely, 2^{18812870752242} is an apocalyptic number.

18812870752242 is an abundant number, since it is smaller than the sum of its proper divisors (25000322765838).

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

18812870752242 is a wasteful number, since it uses less digits than its factorization.

18812870752242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194767.

The product of its (nonzero) digits is 8028160, while the sum is 57.

The spelling of 18812870752242 in words is "eighteen trillion, eight hundred twelve billion, eight hundred seventy million, seven hundred fifty-two thousand, two hundred forty-two".