1099183638981 has 4 divisors (see below), whose sum is σ = 1465578185312. Its totient is φ = 732789092652.

The previous prime is 1099183638961. The next prime is 1099183638983. The reversal of 1099183638981 is 1898363819901.

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 not a de Polignac number, because 1099183638981 - 2²⁶ = 1099116530117 is a prime.

It is a super-2 number, since 2×1099183638981² (a number of 25 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 (1099183638983) 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, 183197273161 + ... + 183197273166.

It is an arithmetic number, because the mean of its divisors is an integer number (366394546328).

Almost surely, 2^{1099183638981} is an apocalyptic number.

It is an amenable number.

1099183638981 is a deficient number, since it is larger than the sum of its proper divisors (366394546331).

1099183638981 is an equidigital number, since it uses as much as digits as its factorization.

1099183638981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366394546330.

The product of its (nonzero) digits is 20155392, while the sum is 66.

The spelling of 1099183638981 in words is "one trillion, ninety-nine billion, one hundred eighty-three million, six hundred thirty-eight thousand, nine hundred eighty-one".