190449517 has 2 divisors, whose sum is σ = 190449518. Its totient is φ = 190449516.

The previous prime is 190449403. The next prime is 190449529. The reversal of 190449517 is 715944091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117961321 + 72488196 = 10861^2 + 8514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190449517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190449517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190449557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95224758 + 95224759.

It is an arithmetic number, because the mean of its divisors is an integer number (95224759).

Almost surely, 2^190449517 is an apocalyptic number.

It is an amenable number.

190449517 is a deficient number, since it is larger than the sum of its proper divisors (1).

190449517 is an equidigital number, since it uses as much as digits as its factorization.

190449517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 190449517 is about 13800.3448145327. The cubic root of 190449517 is about 575.3427239740.

It can be divided in two parts, 19044 and 9517, that added together give a 4-th power (28561 = 13⁴).

The spelling of 190449517 in words is "one hundred ninety million, four hundred forty-nine thousand, five hundred seventeen".