1438672555 has 8 divisors (see below), whose sum is σ = 1748260800. Its totient is φ = 1136368896.

The previous prime is 1438672541. The next prime is 1438672559. The reversal of 1438672555 is 5552768341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1438672555 - 2⁷ = 1438672427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438672559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1820710 + ... + 1821499.

It is an arithmetic number, because the mean of its divisors is an integer number (218532600).

Almost surely, 2^1438672555 is an apocalyptic number.

1438672555 is a deficient number, since it is larger than the sum of its proper divisors (309588245).

1438672555 is an equidigital number, since it uses as much as digits as its factorization.

1438672555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642293.

The product of its digits is 1008000, while the sum is 46.

The square root of 1438672555 is about 37929.8372656672. The cubic root of 1438672555 is about 1128.8961353204.

The spelling of 1438672555 in words is "one billion, four hundred thirty-eight million, six hundred seventy-two thousand, five hundred fifty-five".