190993001 has 8 divisors (see below), whose sum is σ = 196485384. Its totient is φ = 185518080.

The previous prime is 190992983. The next prime is 190993031. The reversal of 190993001 is 100399091.

It can be written as a sum of positive squares in 4 ways, for example, as 135117376 + 55875625 = 11624^2 + 7475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190993001 - 2¹⁸ = 190730857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190993031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19691 + ... + 27743.

It is an arithmetic number, because the mean of its divisors is an integer number (24560673).

Almost surely, 2^190993001 is an apocalyptic number.

It is an amenable number.

190993001 is a deficient number, since it is larger than the sum of its proper divisors (5492383).

190993001 is an equidigital number, since it uses as much as digits as its factorization.

190993001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 190993001 is about 13820.0217438324. The cubic root of 190993001 is about 575.8894875833.

The spelling of 190993001 in words is "one hundred ninety million, nine hundred ninety-three thousand, one".