1122953809 has 4 divisors (see below), whose sum is σ = 1123030116. Its totient is φ = 1122877504.

The previous prime is 1122953761. The next prime is 1122953813. The reversal of 1122953809 is 9083592211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9083592211 = 5237 ⋅1734503.

It can be written as a sum of positive squares in 2 ways, for example, as 164865600 + 958088209 = 12840^2 + 30953^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122953809 - 2⁹ = 1122953297 is a prime.

It is a super-2 number, since 2×1122953809² = 2522050514295216962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122953849) 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, 8284 + ... + 48109.

It is an arithmetic number, because the mean of its divisors is an integer number (280757529).

Almost surely, 2^1122953809 is an apocalyptic number.

It is an amenable number.

1122953809 is a deficient number, since it is larger than the sum of its proper divisors (76307).

1122953809 is an equidigital number, since it uses as much as digits as its factorization.

1122953809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76306.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1122953809 is about 33510.5029654883. The cubic root of 1122953809 is about 1039.4109734693.

The spelling of 1122953809 in words is "one billion, one hundred twenty-two million, nine hundred fifty-three thousand, eight hundred nine".