36018691 has 2 divisors, whose sum is σ = 36018692. Its totient is φ = 36018690.

The previous prime is 36018679. The next prime is 36018709. The reversal of 36018691 is 19681063.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36018691 - 2⁵ = 36018659 is a prime.

It is a super-2 number, since 2×36018691² = 2594692202706962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36018601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18009345 + 18009346.

It is an arithmetic number, because the mean of its divisors is an integer number (18009346).

Almost surely, 2^36018691 is an apocalyptic number.

36018691 is a deficient number, since it is larger than the sum of its proper divisors (1).

36018691 is an equidigital number, since it uses as much as digits as its factorization.

36018691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 36018691 is about 6001.5573812136. The cubic root of 36018691 is about 330.2498597454.

The spelling of 36018691 in words is "thirty-six million, eighteen thousand, six hundred ninety-one".