89228181901 has 2 divisors, whose sum is σ = 89228181902. Its totient is φ = 89228181900.

The previous prime is 89228181839. The next prime is 89228181923. The reversal of 89228181901 is 10918182298.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73327224100 + 15900957801 = 270790^2 + 126099^2 .

It is a cyclic number.

It is not a de Polignac number, because 89228181901 - 2¹³ = 89228173709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89228181001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44614090950 + 44614090951.

It is an arithmetic number, because the mean of its divisors is an integer number (44614090951).

Almost surely, 2^89228181901 is an apocalyptic number.

It is an amenable number.

89228181901 is a deficient number, since it is larger than the sum of its proper divisors (1).

89228181901 is an equidigital number, since it uses as much as digits as its factorization.

89228181901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 49.

The spelling of 89228181901 in words is "eighty-nine billion, two hundred twenty-eight million, one hundred eighty-one thousand, nine hundred one".