190874669 has 2 divisors, whose sum is σ = 190874670. Its totient is φ = 190874668.

The previous prime is 190874597. The next prime is 190874683. The reversal of 190874669 is 966478091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172922500 + 17952169 = 13150^2 + 4237^2 .

It is a cyclic number.

It is not a de Polignac number, because 190874669 - 2⁸ = 190874413 is a prime.

It is a super-2 number, since 2×190874669² = 72866278531719122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190874689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95437334 + 95437335.

It is an arithmetic number, because the mean of its divisors is an integer number (95437335).

Almost surely, 2^190874669 is an apocalyptic number.

It is an amenable number.

190874669 is a deficient number, since it is larger than the sum of its proper divisors (1).

190874669 is an equidigital number, since it uses as much as digits as its factorization.

190874669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 190874669 is about 13815.7399005627. The cubic root of 190874669 is about 575.7705299375.

The spelling of 190874669 in words is "one hundred ninety million, eight hundred seventy-four thousand, six hundred sixty-nine".