10918382921 has 4 divisors (see below), whose sum is σ = 10922473344. Its totient is φ = 10914292500.

The previous prime is 10918382899. The next prime is 10918382929. The reversal of 10918382921 is 12928381901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10918382921 - 2²² = 10914188617 is a prime.

It is a super-2 number, since 2×10918382921² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10918382929) 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, 2041205 + ... + 2046546.

It is an arithmetic number, because the mean of its divisors is an integer number (2730618336).

Almost surely, 2^10918382921 is an apocalyptic number.

It is an amenable number.

10918382921 is a deficient number, since it is larger than the sum of its proper divisors (4090423).

10918382921 is an equidigital number, since it uses as much as digits as its factorization.

10918382921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090422.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 10918382921 in words is "ten billion, nine hundred eighteen million, three hundred eighty-two thousand, nine hundred twenty-one".