1216472975 has 6 divisors (see below), whose sum is σ = 1508426520. Its totient is φ = 973178360.

The previous prime is 1216472963. The next prime is 1216472981. The reversal of 1216472975 is 5792746121.

It is a de Polignac number, because none of the positive numbers 2^k-1216472975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24329435 + ... + 24329484.

It is an arithmetic number, because the mean of its divisors is an integer number (251404420).

Almost surely, 2^1216472975 is an apocalyptic number.

1216472975 is a deficient number, since it is larger than the sum of its proper divisors (291953545).

1216472975 is an equidigital number, since it uses as much as digits as its factorization.

1216472975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48658929 (or 48658924 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 1216472975 is about 34877.9726331678. The cubic root of 1216472975 is about 1067.4990283124.

The spelling of 1216472975 in words is "one billion, two hundred sixteen million, four hundred seventy-two thousand, nine hundred seventy-five".