981948849061 has 2 divisors, whose sum is σ = 981948849062. Its totient is φ = 981948849060.

The previous prime is 981948849053. The next prime is 981948849097. The reversal of 981948849061 is 160948849189.

981948849061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929585222500 + 52363626561 = 964150^2 + 228831^2 .

It is a cyclic number.

It is not a de Polignac number, because 981948849061 - 2³ = 981948849053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981148849061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490974424530 + 490974424531.

It is an arithmetic number, because the mean of its divisors is an integer number (490974424531).

Almost surely, 2^981948849061 is an apocalyptic number.

It is an amenable number.

981948849061 is a deficient number, since it is larger than the sum of its proper divisors (1).

981948849061 is an equidigital number, since it uses as much as digits as its factorization.

981948849061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35831808, while the sum is 67.

The spelling of 981948849061 in words is "nine hundred eighty-one billion, nine hundred forty-eight million, eight hundred forty-nine thousand, sixty-one".