1238204871 has 6 divisors (see below), whose sum is σ = 1788518160. Its totient is φ = 825469908.

The previous prime is 1238204867. The next prime is 1238204881. The reversal of 1238204871 is 1784028321.

It is not a de Polignac number, because 1238204871 - 2² = 1238204867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238204831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68789151 + ... + 68789168.

It is an arithmetic number, because the mean of its divisors is an integer number (298086360).

Almost surely, 2^1238204871 is an apocalyptic number.

1238204871 is a deficient number, since it is larger than the sum of its proper divisors (550313289).

1238204871 is a wasteful number, since it uses less digits than its factorization.

1238204871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137578325 (or 137578322 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1238204871 is about 35188.1353725940. The cubic root of 1238204871 is about 1073.8183868393.

The spelling of 1238204871 in words is "one billion, two hundred thirty-eight million, two hundred four thousand, eight hundred seventy-one".