1358831872 has 36 divisors (see below), whose sum is σ = 2740368316. Its totient is φ = 672399360.

The previous prime is 1358831869. The next prime is 1358831933. The reversal of 1358831872 is 2781388531.

It can be written as a sum of positive squares in 2 ways, for example, as 801116416 + 557715456 = 28304^2 + 23616^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2529 + ... + 52192.

Almost surely, 2^1358831872 is an apocalyptic number.

It is an amenable number.

1358831872 is an abundant number, since it is smaller than the sum of its proper divisors (1381536444).

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

1358831872 is an frugal number, since it uses more digits than its factorization.

1358831872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54834 (or 54820 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 1358831872 is about 36862.3367680347. The cubic root of 1358831872 is about 1107.6143531402.

The spelling of 1358831872 in words is "one billion, three hundred fifty-eight million, eight hundred thirty-one thousand, eight hundred seventy-two".