190910735881 has 2 divisors, whose sum is σ = 190910735882. Its totient is φ = 190910735880.

The previous prime is 190910735839. The next prime is 190910735887. The reversal of 190910735881 is 188537019091.

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., 165534245881 + 25376490000 = 406859^2 + 159300^2 .

It is a cyclic number.

It is not a de Polignac number, because 190910735881 - 2²⁹ = 190373864969 is a prime.

It is a super-2 number, since 2×190910735881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190910735887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95455367940 + 95455367941.

It is an arithmetic number, because the mean of its divisors is an integer number (95455367941).

Almost surely, 2^190910735881 is an apocalyptic number.

It is an amenable number.

190910735881 is a deficient number, since it is larger than the sum of its proper divisors (1).

190910735881 is an equidigital number, since it uses as much as digits as its factorization.

190910735881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 190910735881 in words is "one hundred ninety billion, nine hundred ten million, seven hundred thirty-five thousand, eight hundred eighty-one".