190280161 has 2 divisors, whose sum is σ = 190280162. Its totient is φ = 190280160.

The previous prime is 190280143. The next prime is 190280183. The reversal of 190280161 is 161082091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121969936 + 68310225 = 11044^2 + 8265^2 .

It is an emirp because it is prime and its reverse (161082091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190280161 - 2⁷ = 190280033 is a prime.

It is not a weakly prime, because it can be changed into another prime (190280261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95140080 + 95140081.

It is an arithmetic number, because the mean of its divisors is an integer number (95140081).

Almost surely, 2^190280161 is an apocalyptic number.

It is an amenable number.

190280161 is a deficient number, since it is larger than the sum of its proper divisors (1).

190280161 is an equidigital number, since it uses as much as digits as its factorization.

190280161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 190280161 is about 13794.2075162004. The cubic root of 190280161 is about 575.1721334677.

The spelling of 190280161 in words is "one hundred ninety million, two hundred eighty thousand, one hundred sixty-one".