8152464681 has 9 divisors (see below), whose sum is σ = 11776173591. Its totient is φ = 5434795872.

The previous prime is 8152464613. The next prime is 8152464707. The reversal of 8152464681 is 1864642518.

It is a happy number.

The square root of 8152464681 is 90291.

It is a perfect power (a square), and thus also a powerful number.

8152464681 is a `hidden beast` number, since 8 + 1 + 524 + 6 + 46 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 8061166656 = 9555^2 + 89784^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8152464681 - 2⁷ = 8152464553 is a prime.

It is a super-2 number, since 2×8152464681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8152466681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 255825 + ... + 285921.

Almost surely, 2^8152464681 is an apocalyptic number.

8152464681 is the 90291-st square number.

8152464681 is the 45146-th centered octagonal number.

It is an amenable number.

8152464681 is a deficient number, since it is larger than the sum of its proper divisors (3623708910).

8152464681 is an frugal number, since it uses more digits than its factorization.

8152464681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60200 (or 30100 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The cubic root of 8152464681 is about 2012.6255204866.

The spelling of 8152464681 in words is "eight billion, one hundred fifty-two million, four hundred sixty-four thousand, six hundred eighty-one".