1121643266 has 8 divisors (see below), whose sum is σ = 1740481020. Its totient is φ = 541482928.

The previous prime is 1121643233. The next prime is 1121643287. The reversal of 1121643266 is 6623461211.

It can be written as a sum of positive squares in 2 ways, for example, as 1038450625 + 83192641 = 32225^2 + 9121^2 .

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

It is a super-3 number, since 3×1121643266³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9669281 + ... + 9669396.

Almost surely, 2^1121643266 is an apocalyptic number.

1121643266 is a deficient number, since it is larger than the sum of its proper divisors (618837754).

1121643266 is a wasteful number, since it uses less digits than its factorization.

1121643266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19338708.

The product of its digits is 10368, while the sum is 32.

The square root of 1121643266 is about 33490.9430443516. The cubic root of 1121643266 is about 1039.0064679519.

The spelling of 1121643266 in words is "one billion, one hundred twenty-one million, six hundred forty-three thousand, two hundred sixty-six".