2136491 has 16 divisors (see below), whose sum is σ = 2564544. Its totient is φ = 1741824.

The previous prime is 2136487. The next prime is 2136527. The reversal of 2136491 is 1946312.

It is not a de Polignac number, because 2136491 - 2² = 2136487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2136491.

It is not an unprimeable number, because it can be changed into a prime (2136451) 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, 18851 + ... + 18963.

It is an arithmetic number, because the mean of its divisors is an integer number (160284).

2^2136491 is an apocalyptic number.

2136491 is a deficient number, since it is larger than the sum of its proper divisors (428053).

2136491 is a wasteful number, since it uses less digits than its factorization.

2136491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230.

The product of its digits is 1296, while the sum is 26.

The square root of 2136491 is about 1461.6740402703. The cubic root of 2136491 is about 128.7954010870.

The spelling of 2136491 in words is "two million, one hundred thirty-six thousand, four hundred ninety-one".