89751904181 has 2 divisors, whose sum is σ = 89751904182. Its totient is φ = 89751904180.

The previous prime is 89751904157. The next prime is 89751904183. The reversal of 89751904181 is 18140915798.

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., 64956677956 + 24795226225 = 254866^2 + 157465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89751904181 is a prime.

It is a super-2 number, since 2×89751904181² (a number of 23 digits) contains 22 as substring.

Together with 89751904183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89751904183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44875952090 + 44875952091.

It is an arithmetic number, because the mean of its divisors is an integer number (44875952091).

Almost surely, 2^89751904181 is an apocalyptic number.

It is an amenable number.

89751904181 is a deficient number, since it is larger than the sum of its proper divisors (1).

89751904181 is an equidigital number, since it uses as much as digits as its factorization.

89751904181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 53.

The spelling of 89751904181 in words is "eighty-nine billion, seven hundred fifty-one million, nine hundred four thousand, one hundred eighty-one".