36001999 has 16 divisors (see below), whose sum is σ = 41122080. Its totient is φ = 31224960.

The previous prime is 36001993. The next prime is 36002009. The reversal of 36001999 is 99910063.

36001999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 36001999 - 2³ = 36001991 is a prime.

It is a super-2 number, since 2×36001999² = 2592287863992002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36001991) 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 15 ways as a sum of consecutive naturals, for example, 20737 + ... + 22405.

It is an arithmetic number, because the mean of its divisors is an integer number (2570130).

Almost surely, 2^36001999 is an apocalyptic number.

36001999 is a deficient number, since it is larger than the sum of its proper divisors (5120081).

36001999 is a wasteful number, since it uses less digits than its factorization.

36001999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 36001999 is about 6000.1665810209. The cubic root of 36001999 is about 330.1988363991.

The spelling of 36001999 in words is "thirty-six million, one thousand, nine hundred ninety-nine".