1243463216 has 40 divisors (see below), whose sum is σ = 2430206064. Its totient is φ = 616340480.

The previous prime is 1243463209. The next prime is 1243463219. The reversal of 1243463216 is 6123643421.

It is not an unprimeable number, because it can be changed into a prime (1243463219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046975 + ... + 1048161.

Almost surely, 2^1243463216 is an apocalyptic number.

1243463216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1243463216 is a deficient number, since it is larger than the sum of its proper divisors (1186742848).

1243463216 is a wasteful number, since it uses less digits than its factorization.

1243463216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1703 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 1243463216 is about 35262.7737990079. The cubic root of 1243463216 is about 1075.3363190714.

The spelling of 1243463216 in words is "one billion, two hundred forty-three million, four hundred sixty-three thousand, two hundred sixteen".