1243471016 has 8 divisors (see below), whose sum is σ = 2331508170. Its totient is φ = 621735504.

The previous prime is 1243471003. The next prime is 1243471037. The reversal of 1243471016 is 6101743421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1227100900 + 16370116 = 35030^2 + 4046^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1243471016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77716931 + ... + 77716946.

Almost surely, 2^1243471016 is an apocalyptic number.

It is an amenable number.

1243471016 is a deficient number, since it is larger than the sum of its proper divisors (1088037154).

1243471016 is a wasteful number, since it uses less digits than its factorization.

1243471016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155433883 (or 155433879 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1243471016 is about 35262.8843970541. The cubic root of 1243471016 is about 1075.3385675244.

The spelling of 1243471016 in words is "one billion, two hundred forty-three million, four hundred seventy-one thousand, sixteen".