36188991 has 8 divisors (see below), whose sum is σ = 53613360. Its totient is φ = 24125976.

The previous prime is 36188989. The next prime is 36188993. The reversal of 36188991 is 19988163.

36188991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (36188989) and next prime (36188993).

It is not a de Polignac number, because 36188991 - 2¹ = 36188989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36188993) 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, 670140 + ... + 670193.

It is an arithmetic number, because the mean of its divisors is an integer number (6701670).

Almost surely, 2^36188991 is an apocalyptic number.

36188991 is a deficient number, since it is larger than the sum of its proper divisors (17424369).

36188991 is a wasteful number, since it uses less digits than its factorization.

36188991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340342 (or 1340336 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 36188991 is about 6015.7286341723. The cubic root of 36188991 is about 330.7695264617.

The spelling of 36188991 in words is "thirty-six million, one hundred eighty-eight thousand, nine hundred ninety-one".