8457251992 has 16 divisors (see below), whose sum is σ = 18122682960. Its totient is φ = 3624536544.

The previous prime is 8457251963. The next prime is 8457252043. The reversal of 8457251992 is 2991527548.

It is a super-2 number, since 2×8457251992² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 75511123 + ... + 75511234.

It is an arithmetic number, because the mean of its divisors is an integer number (1132667685).

Almost surely, 2^8457251992 is an apocalyptic number.

It is an amenable number.

8457251992 is an abundant number, since it is smaller than the sum of its proper divisors (9665430968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8457251992 is a wasteful number, since it uses less digits than its factorization.

8457251992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151022370 (or 151022366 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 52.

The square root of 8457251992 is about 91963.3187308940. The cubic root of 8457251992 is about 2037.4005716194.

The spelling of 8457251992 in words is "eight billion, four hundred fifty-seven million, two hundred fifty-one thousand, nine hundred ninety-two".