190315117 has 2 divisors, whose sum is σ = 190315118. Its totient is φ = 190315116.

The previous prime is 190315093. The next prime is 190315121. The reversal of 190315117 is 711513091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189860841 + 454276 = 13779^2 + 674^2 .

It is an emirp because it is prime and its reverse (711513091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190315117 - 2¹¹ = 190313069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190315157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95157558 + 95157559.

It is an arithmetic number, because the mean of its divisors is an integer number (95157559).

Almost surely, 2^190315117 is an apocalyptic number.

It is an amenable number.

190315117 is a deficient number, since it is larger than the sum of its proper divisors (1).

190315117 is an equidigital number, since it uses as much as digits as its factorization.

190315117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 190315117 is about 13795.4745115926. The cubic root of 190315117 is about 575.2073525641.

It can be divided in two parts, 1903 and 15117, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 190315117 in words is "one hundred ninety million, three hundred fifteen thousand, one hundred seventeen".