192870221238 has 12 divisors (see below), whose sum is σ = 417885479388. Its totient is φ = 64290073740.

The previous prime is 192870221129. The next prime is 192870221293. The reversal of 192870221238 is 832122078291.

192870221238 is a `hidden beast` number, since 192 + 8 + 7 + 0 + 221 + 238 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 192870221193 and 192870221202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5357506128 + ... + 5357506163.

It is an arithmetic number, because the mean of its divisors is an integer number (34823789949).

Almost surely, 2^192870221238 is an apocalyptic number.

192870221238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

192870221238 is an abundant number, since it is smaller than the sum of its proper divisors (225015258150).

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

192870221238 is a wasteful number, since it uses less digits than its factorization.

192870221238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715012299 (or 10715012296 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 192870221238 in words is "one hundred ninety-two billion, eight hundred seventy million, two hundred twenty-one thousand, two hundred thirty-eight".