18975203142 has 32 divisors (see below), whose sum is σ = 44380545792. Its totient is φ = 5295405024.

The previous prime is 18975203111. The next prime is 18975203161. The reversal of 18975203142 is 24130257981.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 18975203094 and 18975203103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5251573 + ... + 5255184.

It is an arithmetic number, because the mean of its divisors is an integer number (1386892056).

Almost surely, 2^18975203142 is an apocalyptic number.

18975203142 is an abundant number, since it is smaller than the sum of its proper divisors (25405342650).

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

18975203142 is a wasteful number, since it uses less digits than its factorization.

18975203142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10506812.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 18975203142 in words is "eighteen billion, nine hundred seventy-five million, two hundred three thousand, one hundred forty-two".