1338347871 has 24 divisors (see below), whose sum is σ = 2263226784. Its totient is φ = 746115840.

The previous prime is 1338347861. The next prime is 1338347893. The reversal of 1338347871 is 1787438331.

1338347871 is a `hidden beast` number, since 1 + 33 + 83 + 478 + 71 = 666.

It is not a de Polignac number, because 1338347871 - 2⁵ = 1338347839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338347861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256486 + ... + 261651.

It is an arithmetic number, because the mean of its divisors is an integer number (94301116).

Almost surely, 2^1338347871 is an apocalyptic number.

1338347871 is a deficient number, since it is larger than the sum of its proper divisors (924878913).

1338347871 is a wasteful number, since it uses less digits than its factorization.

1338347871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518191 (or 518188 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 1338347871 is about 36583.4371129887. The cubic root of 1338347871 is about 1102.0204933481.

The spelling of 1338347871 in words is "one billion, three hundred thirty-eight million, three hundred forty-seven thousand, eight hundred seventy-one".