1216263075 has 48 divisors (see below), whose sum is σ = 2072281056. Its totient is φ = 628992000.

The previous prime is 1216263067. The next prime is 1216263077. The reversal of 1216263075 is 5703626121.

It is not a de Polignac number, because 1216263075 - 2³ = 1216263067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216263077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1112229 + ... + 1113321.

It is an arithmetic number, because the mean of its divisors is an integer number (43172522).

Almost surely, 2^1216263075 is an apocalyptic number.

1216263075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1216263075 is a deficient number, since it is larger than the sum of its proper divisors (856017981).

1216263075 is a wasteful number, since it uses less digits than its factorization.

1216263075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1216263075 is about 34874.9634408411. The cubic root of 1216263075 is about 1067.4376265004.

Adding to 1216263075 its reverse (5703626121), we get a palindrome (6919889196).

The spelling of 1216263075 in words is "one billion, two hundred sixteen million, two hundred sixty-three thousand, seventy-five".