190833420176989 has 2 divisors, whose sum is σ = 190833420176990. Its totient is φ = 190833420176988.

The previous prime is 190833420176969. The next prime is 190833420177019. The reversal of 190833420176989 is 989671024338091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186799408181764 + 4034011995225 = 13667458^2 + 2008485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190833420176989 is a prime.

It is a super-2 number, since 2×190833420176989² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190833420176969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95416710088494 + 95416710088495.

It is an arithmetic number, because the mean of its divisors is an integer number (95416710088495).

Almost surely, 2^{190833420176989} is an apocalyptic number.

It is an amenable number.

190833420176989 is a deficient number, since it is larger than the sum of its proper divisors (1).

190833420176989 is an equidigital number, since it uses as much as digits as its factorization.

190833420176989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 190833420176989 in words is "one hundred ninety trillion, eight hundred thirty-three billion, four hundred twenty million, one hundred seventy-six thousand, nine hundred eighty-nine".