1347638872 has 8 divisors (see below), whose sum is σ = 2526822900. Its totient is φ = 673819432.

The previous prime is 1347638869. The next prime is 1347638899. The reversal of 1347638872 is 2788367431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1347638872² = 3632261058650864768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84227422 + ... + 84227437.

Almost surely, 2^1347638872 is an apocalyptic number.

It is an amenable number.

1347638872 is a deficient number, since it is larger than the sum of its proper divisors (1179184028).

1347638872 is a wasteful number, since it uses less digits than its factorization.

1347638872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168454865 (or 168454861 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 1347638872 is about 36710.2011980321. The cubic root of 1347638872 is about 1104.5647424797.

The spelling of 1347638872 in words is "one billion, three hundred forty-seven million, six hundred thirty-eight thousand, eight hundred seventy-two".