8146506457 has 4 divisors (see below), whose sum is σ = 8300214180. Its totient is φ = 7992798736.

The previous prime is 8146506449. The next prime is 8146506469. The reversal of 8146506457 is 7546056418.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6383850201 + 1762656256 = 79899^2 + 41984^2 .

It is a cyclic number.

It is not a de Polignac number, because 8146506457 - 2³ = 8146506449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8146506427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76853782 + ... + 76853887.

It is an arithmetic number, because the mean of its divisors is an integer number (2075053545).

Almost surely, 2^8146506457 is an apocalyptic number.

It is an amenable number.

8146506457 is a deficient number, since it is larger than the sum of its proper divisors (153707723).

8146506457 is a wasteful number, since it uses less digits than its factorization.

8146506457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153707722.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 8146506457 is about 90257.9994072548. Note that the first 3 decimals coincide. The cubic root of 8146506457 is about 2012.1350922662.

The spelling of 8146506457 in words is "eight billion, one hundred forty-six million, five hundred six thousand, four hundred fifty-seven".