190148569 has 4 divisors (see below), whose sum is σ = 204775396. Its totient is φ = 175521744.

The previous prime is 190148531. The next prime is 190148573. The reversal of 190148569 is 965841091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 965841091 = 28979 ⋅33329.

It can be written as a sum of positive squares in 2 ways, for example, as 10240000 + 179908569 = 3200^2 + 13413^2 .

It is a cyclic number.

It is not a de Polignac number, because 190148569 - 2¹⁵ = 190115801 is a prime.

It is a super-2 number, since 2×190148569² = 72312956585495522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190148869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313394 + ... + 7313419.

It is an arithmetic number, because the mean of its divisors is an integer number (51193849).

Almost surely, 2^190148569 is an apocalyptic number.

It is an amenable number.

190148569 is a deficient number, since it is larger than the sum of its proper divisors (14626827).

190148569 is a wasteful number, since it uses less digits than its factorization.

190148569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14626826.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 190148569 is about 13789.4368630485. The cubic root of 190148569 is about 575.0395123446.

The spelling of 190148569 in words is "one hundred ninety million, one hundred forty-eight thousand, five hundred sixty-nine".