1243538466 has 16 divisors (see below), whose sum is σ = 2499704064. Its totient is φ = 412408304.

The previous prime is 1243538459. The next prime is 1243538489. The reversal of 1243538466 is 6648353421.

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 7 ways as a sum of consecutive naturals, for example, 524850 + ... + 527213.

It is an arithmetic number, because the mean of its divisors is an integer number (156231504).

Almost surely, 2^1243538466 is an apocalyptic number.

1243538466 is an abundant number, since it is smaller than the sum of its proper divisors (1256165598).

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

1243538466 is a wasteful number, since it uses less digits than its factorization.

1243538466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052265.

The product of its digits is 414720, while the sum is 42.

The square root of 1243538466 is about 35263.8407720997. The cubic root of 1243538466 is about 1075.3580104852.

The spelling of 1243538466 in words is "one billion, two hundred forty-three million, five hundred thirty-eight thousand, four hundred sixty-six".