190993649 has 16 divisors (see below), whose sum is σ = 240009216. Its totient is φ = 147646800.

The previous prime is 190993631. The next prime is 190993651. The reversal of 190993649 is 946399091.

It is a happy number.

190993649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190993649 - 2²⁰ = 189945073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190993597 and 190993606.

It is not an unprimeable number, because it can be changed into a prime (190993669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14 + ... + 19544.

It is an arithmetic number, because the mean of its divisors is an integer number (15000576).

Almost surely, 2^190993649 is an apocalyptic number.

It is an amenable number.

190993649 is a deficient number, since it is larger than the sum of its proper divisors (49015567).

190993649 is a wasteful number, since it uses less digits than its factorization.

190993649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19676.

The product of its (nonzero) digits is 472392, while the sum is 50.

The square root of 190993649 is about 13820.0451880593. The cubic root of 190993649 is about 575.8901388741.

The spelling of 190993649 in words is "one hundred ninety million, nine hundred ninety-three thousand, six hundred forty-nine".