1243472564 has 12 divisors (see below), whose sum is σ = 2208556224. Its totient is φ = 612456504.

The previous prime is 1243472557. The next prime is 1243472569. The reversal of 1243472564 is 4652743421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243472569) 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, 2319644 + ... + 2320179.

It is an arithmetic number, because the mean of its divisors is an integer number (184046352).

Almost surely, 2^1243472564 is an apocalyptic number.

It is an amenable number.

1243472564 is a deficient number, since it is larger than the sum of its proper divisors (965083660).

1243472564 is a wasteful number, since it uses less digits than its factorization.

1243472564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639894 (or 4639892 counting only the distinct ones).

The product of its digits is 161280, while the sum is 38.

The square root of 1243472564 is about 35262.9063464712. The cubic root of 1243472564 is about 1075.3390137547.

The spelling of 1243472564 in words is "one billion, two hundred forty-three million, four hundred seventy-two thousand, five hundred sixty-four".