1438541601 has 32 divisors (see below), whose sum is σ = 2290022400. Its totient is φ = 785372544.

The previous prime is 1438541597. The next prime is 1438541617. The reversal of 1438541601 is 1061458341.

It is not a de Polignac number, because 1438541601 - 2² = 1438541597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438541501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 819741 + ... + 821493.

It is an arithmetic number, because the mean of its divisors is an integer number (71563200).

Almost surely, 2^1438541601 is an apocalyptic number.

It is an amenable number.

1438541601 is a deficient number, since it is larger than the sum of its proper divisors (851480799).

1438541601 is a wasteful number, since it uses less digits than its factorization.

1438541601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1438541601 is about 37928.1109600781. The cubic root of 1438541601 is about 1128.8618819966.

Adding to 1438541601 its reverse (1061458341), we get a palindrome (2499999942).

The spelling of 1438541601 in words is "one billion, four hundred thirty-eight million, five hundred forty-one thousand, six hundred one".