191489101056037 has 2 divisors, whose sum is σ = 191489101056038. Its totient is φ = 191489101056036.

The previous prime is 191489101055971. The next prime is 191489101056049. The reversal of 191489101056037 is 730650101984191.

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., 191088765192196 + 400335863841 = 13823486^2 + 632721^2 .

It is a cyclic number.

It is not a de Polignac number, because 191489101056037 - 2¹⁹ = 191489100531749 is a prime.

It is a super-2 number, since 2×191489101056037² (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 (191489101051037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95744550528018 + 95744550528019.

It is an arithmetic number, because the mean of its divisors is an integer number (95744550528019).

Almost surely, 2^{191489101056037} is an apocalyptic number.

It is an amenable number.

191489101056037 is a deficient number, since it is larger than the sum of its proper divisors (1).

191489101056037 is an equidigital number, since it uses as much as digits as its factorization.

191489101056037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 191489101056037 in words is "one hundred ninety-one trillion, four hundred eighty-nine billion, one hundred one million, fifty-six thousand, thirty-seven".