1243766466 has 24 divisors (see below), whose sum is σ = 2697209580. Its totient is φ = 414222336.

The previous prime is 1243766449. The next prime is 1243766477. The reversal of 1243766466 is 6646673421.

It is a happy number.

1243766466 is a `hidden beast` number, since 124 + 3 + 7 + 66 + 466 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1230957225 + 12809241 = 35085^2 + 3579^2 .

It is a super-2 number, since 2×1243766466² = 3093910043892258312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9211 + ... + 50718.

Almost surely, 2^1243766466 is an apocalyptic number.

1243766466 is an abundant number, since it is smaller than the sum of its proper divisors (1453443114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243766466 is a wasteful number, since it uses less digits than its factorization.

1243766466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61090 (or 61087 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 1243766466 is about 35267.0733971505. The cubic root of 1243766466 is about 1075.4237279654.

The spelling of 1243766466 in words is "one billion, two hundred forty-three million, seven hundred sixty-six thousand, four hundred sixty-six".