1096638821 has 8 divisors (see below), whose sum is σ = 1101185280. Its totient is φ = 1092102688.

The previous prime is 1096638817. The next prime is 1096638853. The reversal of 1096638821 is 1288366901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1096638821 - 2² = 1096638817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1096638811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263660 + ... + 267786.

It is an arithmetic number, because the mean of its divisors is an integer number (137648160).

Almost surely, 2^1096638821 is an apocalyptic number.

It is an amenable number.

1096638821 is a deficient number, since it is larger than the sum of its proper divisors (4546459).

1096638821 is an equidigital number, since it uses as much as digits as its factorization.

1096638821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1096638821 is about 33115.5374560039. The cubic root of 1096638821 is about 1031.2276250744.

The spelling of 1096638821 in words is "one billion, ninety-six million, six hundred thirty-eight thousand, eight hundred twenty-one".