7257456818 has 8 divisors (see below), whose sum is σ = 11023985280. Its totient is φ = 3582795060.

The previous prime is 7257456743. The next prime is 7257456821. The reversal of 7257456818 is 8186547527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7257456818.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 22966478 + ... + 22966793.

It is an arithmetic number, because the mean of its divisors is an integer number (1377998160).

Almost surely, 2^7257456818 is an apocalyptic number.

7257456818 is a deficient number, since it is larger than the sum of its proper divisors (3766528462).

7257456818 is a wasteful number, since it uses less digits than its factorization.

7257456818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45933352.

The product of its digits is 3763200, while the sum is 53.

The square root of 7257456818 is about 85190.7085191807. The cubic root of 7257456818 is about 1936.1016428959.

The spelling of 7257456818 in words is "seven billion, two hundred fifty-seven million, four hundred fifty-six thousand, eight hundred eighteen".