36190991 has 16 divisors (see below), whose sum is σ = 39160800. Its totient is φ = 33343488.

The previous prime is 36190969. The next prime is 36191003. The reversal of 36190991 is 19909163.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36190991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36190291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134405 + ... + 134673.

It is an arithmetic number, because the mean of its divisors is an integer number (2447550).

Almost surely, 2^36190991 is an apocalyptic number.

36190991 is a deficient number, since it is larger than the sum of its proper divisors (2969809).

36190991 is a wasteful number, since it uses less digits than its factorization.

36190991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 36190991 is about 6015.8948627781. The cubic root of 36190991 is about 330.7756197224.

The spelling of 36190991 in words is "thirty-six million, one hundred ninety thousand, nine hundred ninety-one".