7444851856 has 40 divisors (see below), whose sum is σ = 15746795960. Its totient is φ = 3389008896.

The previous prime is 7444851823. The next prime is 7444851857. The reversal of 7444851856 is 6581584447.

It can be written as a sum of positive squares in 4 ways, for example, as 980691856 + 6464160000 = 31316^2 + 80400^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (7444851857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229971 + ... + 260338.

It is an arithmetic number, because the mean of its divisors is an integer number (393669899).

Almost surely, 2^7444851856 is an apocalyptic number.

It is an amenable number.

7444851856 is an abundant number, since it is smaller than the sum of its proper divisors (8301944104).

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

7444851856 is a wasteful number, since it uses less digits than its factorization.

7444851856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490403 (or 490397 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 52.

The square root of 7444851856 is about 86283.5549568978. The cubic root of 7444851856 is about 1952.6242866252.

The spelling of 7444851856 in words is "seven billion, four hundred forty-four million, eight hundred fifty-one thousand, eight hundred fifty-six".