948889113661 has 4 divisors (see below), whose sum is σ = 949305112924. Its totient is φ = 948473114400.

The previous prime is 948889113629. The next prime is 948889113691. The reversal of 948889113661 is 166311988849.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 493216862436 + 455672251225 = 702294^2 + 675035^2 .

It is a cyclic number.

It is not a de Polignac number, because 948889113661 - 2⁵ = 948889113629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 948889113593 and 948889113602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948889113691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207996210 + ... + 208000771.

It is an arithmetic number, because the mean of its divisors is an integer number (237326278231).

Almost surely, 2^948889113661 is an apocalyptic number.

It is an amenable number.

948889113661 is a deficient number, since it is larger than the sum of its proper divisors (415999263).

948889113661 is a wasteful number, since it uses less digits than its factorization.

948889113661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415999262.

The product of its digits is 17915904, while the sum is 64.

The spelling of 948889113661 in words is "nine hundred forty-eight billion, eight hundred eighty-nine million, one hundred thirteen thousand, six hundred sixty-one".