10136491 has 4 divisors (see below), whose sum is σ = 10577232. Its totient is φ = 9695752.

The previous prime is 10136453. The next prime is 10136501. The reversal of 10136491 is 19463101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19463101 = 7 ⋅2780443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10136491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10131491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220336 + ... + 220381.

It is an arithmetic number, because the mean of its divisors is an integer number (2644308).

Almost surely, 2^10136491 is an apocalyptic number.

10136491 is a deficient number, since it is larger than the sum of its proper divisors (440741).

10136491 is an equidigital number, since it uses as much as digits as its factorization.

10136491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440740.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10136491 is about 3183.7856397691. The cubic root of 10136491 is about 216.4192460358.

Adding to 10136491 its reverse (19463101), we get a palindrome (29599592).

The spelling of 10136491 in words is "ten million, one hundred thirty-six thousand, four hundred ninety-one".