1338161272 has 32 divisors (see below), whose sum is σ = 2875345920. Its totient is φ = 571926240.

The previous prime is 1338161267. The next prime is 1338161287. The reversal of 1338161272 is 2721618331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12004 + ... + 53107.

It is an arithmetic number, because the mean of its divisors is an integer number (89854560).

Almost surely, 2^1338161272 is an apocalyptic number.

It is an amenable number.

1338161272 is an abundant number, since it is smaller than the sum of its proper divisors (1537184648).

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

1338161272 is a wasteful number, since it uses less digits than its factorization.

1338161272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65491 (or 65487 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1338161272 is about 36580.8867033045. The cubic root of 1338161272 is about 1101.9692746069.

The spelling of 1338161272 in words is "one billion, three hundred thirty-eight million, one hundred sixty-one thousand, two hundred seventy-two".