1372861648 has 20 divisors (see below), whose sum is σ = 2662001248. Its totient is φ = 685893600.

The previous prime is 1372861627. The next prime is 1372861687. The reversal of 1372861648 is 8461682731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1372861598 and 1372861607.

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 in 3 ways as a sum of consecutive naturals, for example, 12078 + ... + 53773.

Almost surely, 2^1372861648 is an apocalyptic number.

It is an amenable number.

1372861648 is a deficient number, since it is larger than the sum of its proper divisors (1289139600).

1372861648 is a wasteful number, since it uses less digits than its factorization.

1372861648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67162 (or 67156 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 1372861648 is about 37052.1476840412. The cubic root of 1372861648 is about 1111.4133035051.

The spelling of 1372861648 in words is "one billion, three hundred seventy-two million, eight hundred sixty-one thousand, six hundred forty-eight".