1108646421 has 16 divisors (see below), whose sum is σ = 1525167360. Its totient is φ = 715965120.

The previous prime is 1108646417. The next prime is 1108646431. The reversal of 1108646421 is 1246468011.

It is not a de Polignac number, because 1108646421 - 2² = 1108646417 is a prime.

It is a super-2 number, since 2×1108646421² = 2458193773592218482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108646431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31570 + ... + 56691.

It is an arithmetic number, because the mean of its divisors is an integer number (95322960).

Almost surely, 2^1108646421 is an apocalyptic number.

It is an amenable number.

1108646421 is a deficient number, since it is larger than the sum of its proper divisors (416520939).

1108646421 is an equidigital number, since it uses as much as digits as its factorization.

1108646421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88396.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1108646421 is about 33296.3424567925. The cubic root of 1108646421 is about 1034.9777651645.

The spelling of 1108646421 in words is "one billion, one hundred eight million, six hundred forty-six thousand, four hundred twenty-one".