190255944457 has 2 divisors, whose sum is σ = 190255944458. Its totient is φ = 190255944456.

The previous prime is 190255944443. The next prime is 190255944509. The reversal of 190255944457 is 754449552091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104989608441 + 85266336016 = 324021^2 + 292004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190255944457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190255944398 and 190255944407.

It is not a weakly prime, because it can be changed into another prime (190255944427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95127972228 + 95127972229.

It is an arithmetic number, because the mean of its divisors is an integer number (95127972229).

Almost surely, 2^190255944457 is an apocalyptic number.

It is an amenable number.

190255944457 is a deficient number, since it is larger than the sum of its proper divisors (1).

190255944457 is an equidigital number, since it uses as much as digits as its factorization.

190255944457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 190255944457 in words is "one hundred ninety billion, two hundred fifty-five million, nine hundred forty-four thousand, four hundred fifty-seven".