190135869 has 32 divisors (see below), whose sum is σ = 332712960. Its totient is φ = 93571200.

The previous prime is 190135853. The next prime is 190135877. The reversal of 190135869 is 968531091.

It is not a de Polignac number, because 190135869 - 2⁴ = 190135853 is a prime.

It is a super-2 number, since 2×190135869² = 72303297360770322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 190135869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190135879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17272 + ... + 26049.

It is an arithmetic number, because the mean of its divisors is an integer number (10397280).

Almost surely, 2^190135869 is an apocalyptic number.

190135869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

190135869 is a deficient number, since it is larger than the sum of its proper divisors (142577091).

190135869 is a wasteful number, since it uses less digits than its factorization.

190135869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43361.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 190135869 is about 13788.9763579462. The cubic root of 190135869 is about 575.0267097864.

The spelling of 190135869 in words is "one hundred ninety million, one hundred thirty-five thousand, eight hundred sixty-nine".