948998161 has 2 divisors, whose sum is σ = 948998162. Its totient is φ = 948998160.

The previous prime is 948998137. The next prime is 948998209. The reversal of 948998161 is 161899849.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685130625 + 263867536 = 26175^2 + 16244^2 .

It is an emirp because it is prime and its reverse (161899849) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 948998161 - 2¹⁷ = 948867089 is a prime.

It is not a weakly prime, because it can be changed into another prime (948998861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474499080 + 474499081.

It is an arithmetic number, because the mean of its divisors is an integer number (474499081).

Almost surely, 2^948998161 is an apocalyptic number.

It is an amenable number.

948998161 is a deficient number, since it is larger than the sum of its proper divisors (1).

948998161 is an equidigital number, since it uses as much as digits as its factorization.

948998161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 55.

The square root of 948998161 is about 30805.8137532512. The cubic root of 948998161 is about 982.7018876499.

The spelling of 948998161 in words is "nine hundred forty-eight million, nine hundred ninety-eight thousand, one hundred sixty-one".