219570427838 has 4 divisors (see below), whose sum is σ = 329355641760. Its totient is φ = 109785213918.

The previous prime is 219570427829. The next prime is 219570427859. The reversal of 219570427838 is 838724075912.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×219570427838² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54892606958 + ... + 54892606961.

It is an arithmetic number, because the mean of its divisors is an integer number (82338910440).

Almost surely, 2^219570427838 is an apocalyptic number.

219570427838 is a deficient number, since it is larger than the sum of its proper divisors (109785213922).

219570427838 is a wasteful number, since it uses less digits than its factorization.

219570427838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109785213921.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 219570427838 in words is "two hundred nineteen billion, five hundred seventy million, four hundred twenty-seven thousand, eight hundred thirty-eight".