6451935841 has 4 divisors (see below), whose sum is σ = 6948238612. Its totient is φ = 5955633072.

The previous prime is 6451935839. The next prime is 6451935869. The reversal of 6451935841 is 1485391546.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1705277025 + 4746658816 = 41295^2 + 68896^2 .

It is a cyclic number.

It is not a de Polignac number, because 6451935841 - 2¹ = 6451935839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6451935791 and 6451935800.

It is not an unprimeable number, because it can be changed into a prime (6451935821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248151366 + ... + 248151391.

It is an arithmetic number, because the mean of its divisors is an integer number (1737059653).

Almost surely, 2^6451935841 is an apocalyptic number.

It is an amenable number.

6451935841 is a deficient number, since it is larger than the sum of its proper divisors (496302771).

6451935841 is a wasteful number, since it uses less digits than its factorization.

6451935841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496302770.

The product of its digits is 518400, while the sum is 46.

The square root of 6451935841 is about 80323.9431365269. The cubic root of 6451935841 is about 1861.6441931384.

The spelling of 6451935841 in words is "six billion, four hundred fifty-one million, nine hundred thirty-five thousand, eight hundred forty-one".