6444168754 has 4 divisors (see below), whose sum is σ = 9666253134. Its totient is φ = 3222084376.

The previous prime is 6444168749. The next prime is 6444168769. The reversal of 6444168754 is 4578614446.

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

It can be written as a sum of positive squares in only one way, i.e., 6435729729 + 8439025 = 80223^2 + 2905^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6444168698 and 6444168707.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611042187 + ... + 1611042190.

Almost surely, 2^6444168754 is an apocalyptic number.

6444168754 is a deficient number, since it is larger than the sum of its proper divisors (3222084380).

6444168754 is a wasteful number, since it uses less digits than its factorization.

6444168754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222084379.

The product of its digits is 2580480, while the sum is 49.

The square root of 6444168754 is about 80275.5800601902. The cubic root of 6444168754 is about 1860.8968536849.

The spelling of 6444168754 in words is "six billion, four hundred forty-four million, one hundred sixty-eight thousand, seven hundred fifty-four".