36191001 has 16 divisors (see below), whose sum is σ = 60162048. Its totient is φ = 18800400.

The previous prime is 36190969. The next prime is 36191003. The reversal of 36191001 is 10019163.

It is a happy number.

It is not a de Polignac number, because 36191001 - 2⁵ = 36190969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36191003) 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 in 15 ways as a sum of consecutive naturals, for example, 78105 + ... + 78566.

It is an arithmetic number, because the mean of its divisors is an integer number (3760128).

Almost surely, 2^36191001 is an apocalyptic number.

It is an amenable number.

36191001 is a deficient number, since it is larger than the sum of its proper divisors (23971047).

36191001 is a wasteful number, since it uses less digits than its factorization.

36191001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156692.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 36191001 is about 6015.8956939096. The cubic root of 36191001 is about 330.7756501881.

The spelling of 36191001 in words is "thirty-six million, one hundred ninety-one thousand, one".