6451851518 has 16 divisors (see below), whose sum is σ = 11169827424. Its totient is φ = 2737701600.

The previous prime is 6451851449. The next prime is 6451851541. The reversal of 6451851518 is 8151581546.

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 7 ways as a sum of consecutive naturals, for example, 2280005 + ... + 2282832.

It is an arithmetic number, because the mean of its divisors is an integer number (698114214).

Almost surely, 2^6451851518 is an apocalyptic number.

6451851518 is a deficient number, since it is larger than the sum of its proper divisors (4717975906).

6451851518 is a wasteful number, since it uses less digits than its factorization.

6451851518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562947.

The product of its digits is 192000, while the sum is 44.

The square root of 6451851518 is about 80323.4182415066. The cubic root of 6451851518 is about 1861.6360829055.

The spelling of 6451851518 in words is "six billion, four hundred fifty-one million, eight hundred fifty-one thousand, five hundred eighteen".