1438685441 has 8 divisors (see below), whose sum is σ = 1476499200. Its totient is φ = 1401319440.

The previous prime is 1438685429. The next prime is 1438685459. The reversal of 1438685441 is 1445868341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438685441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1438685392 and 1438685401.

It is not an unprimeable number, because it can be changed into a prime (1438685411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 105425 + ... + 118286.

It is an arithmetic number, because the mean of its divisors is an integer number (184562400).

Almost surely, 2^1438685441 is an apocalyptic number.

It is an amenable number.

1438685441 is a deficient number, since it is larger than the sum of its proper divisors (37813759).

1438685441 is a wasteful number, since it uses less digits than its factorization.

1438685441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223879.

The product of its digits is 368640, while the sum is 44.

The square root of 1438685441 is about 37930.0071315575. The cubic root of 1438685441 is about 1128.8995057681.

The spelling of 1438685441 in words is "one billion, four hundred thirty-eight million, six hundred eighty-five thousand, four hundred forty-one".