190540169 has 2 divisors, whose sum is σ = 190540170. Its totient is φ = 190540168.

The previous prime is 190540139. The next prime is 190540183. The reversal of 190540169 is 961045091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190302025 + 238144 = 13795^2 + 488^2 .

It is an emirp because it is prime and its reverse (961045091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190540169 - 2²⁰ = 189491593 is a prime.

It is a super-2 number, since 2×190540169² = 72611112005097122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190540139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95270084 + 95270085.

It is an arithmetic number, because the mean of its divisors is an integer number (95270085).

Almost surely, 2^190540169 is an apocalyptic number.

It is an amenable number.

190540169 is a deficient number, since it is larger than the sum of its proper divisors (1).

190540169 is an equidigital number, since it uses as much as digits as its factorization.

190540169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 190540169 is about 13803.6288344768. The cubic root of 190540169 is about 575.4339952225.

The spelling of 190540169 in words is "one hundred ninety million, five hundred forty thousand, one hundred sixty-nine".