203878437841 has 27 divisors (see below), whose sum is σ = 225870545691. Its totient is φ = 183942077904.

The previous prime is 203878437793. The next prime is 203878437863. The reversal of 203878437841 is 148734878302.

The square root of 203878437841 is 451529.

It is a perfect power (a square), and thus also a powerful number.

203878437841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 30159532225 + 173718905616 = 173665^2 + 416796^2 .

It is not a de Polignac number, because 203878437841 - 2¹¹ = 203878435793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203878437341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 275883850 + ... + 275884588.

Almost surely, 2^203878437841 is an apocalyptic number.

203878437841 is the 451529-th square number.

203878437841 is the 225765-th centered octagonal number.

It is an amenable number.

203878437841 is a deficient number, since it is larger than the sum of its proper divisors (21992107850).

203878437841 is an frugal number, since it uses more digits than its factorization.

203878437841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 203878437841 in words is "two hundred three billion, eight hundred seventy-eight million, four hundred thirty-seven thousand, eight hundred forty-one".