10218964591 has 4 divisors (see below), whose sum is σ = 11147961384. Its totient is φ = 9289967800.

The previous prime is 10218964573. The next prime is 10218964627. The reversal of 10218964591 is 19546981201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10218964591 - 2¹⁹ = 10218440303 is a prime.

It is a super-2 number, since 2×10218964591² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10218964501) 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, 464498380 + ... + 464498401.

It is an arithmetic number, because the mean of its divisors is an integer number (2786990346).

Almost surely, 2^10218964591 is an apocalyptic number.

10218964591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10218964591 is a deficient number, since it is larger than the sum of its proper divisors (928996793).

10218964591 is an equidigital number, since it uses as much as digits as its factorization.

10218964591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928996792.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 10218964591 in words is "ten billion, two hundred eighteen million, nine hundred sixty-four thousand, five hundred ninety-one".