1216715152 has 10 divisors (see below), whose sum is σ = 2357385638. Its totient is φ = 608357568.

The previous prime is 1216715147. The next prime is 1216715153. The reversal of 1216715152 is 2515176121.

It can be written as a sum of positive squares in only one way, i.e., 1123322256 + 93392896 = 33516^2 + 9664^2 .

It is a super-2 number, since 2×1216715152² = 2960791522212766208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1216715153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38022333 + ... + 38022364.

Almost surely, 2^1216715152 is an apocalyptic number.

It is an amenable number.

1216715152 is a deficient number, since it is larger than the sum of its proper divisors (1140670486).

1216715152 is an equidigital number, since it uses as much as digits as its factorization.

1216715152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76044705 (or 76044699 counting only the distinct ones).

The product of its digits is 4200, while the sum is 31.

The square root of 1216715152 is about 34881.4442361551. Note that the first 3 decimals coincide. The cubic root of 1216715152 is about 1067.5698633038.

The spelling of 1216715152 in words is "one billion, two hundred sixteen million, seven hundred fifteen thousand, one hundred fifty-two".