6454018961 has 4 divisors (see below), whose sum is σ = 6950481972. Its totient is φ = 5957555952.

The previous prime is 6454018913. The next prime is 6454018993. The reversal of 6454018961 is 1698104546.

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 3050463361 + 3403555600 = 55231^2 + 58340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6454018961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6454018861) by changing a digit.

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, 248231486 + ... + 248231511.

It is an arithmetic number, because the mean of its divisors is an integer number (1737620493).

Almost surely, 2^6454018961 is an apocalyptic number.

It is an amenable number.

6454018961 is a deficient number, since it is larger than the sum of its proper divisors (496463011).

6454018961 is a wasteful number, since it uses less digits than its factorization.

6454018961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496463010.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 6454018961 is about 80336.9090829365. The cubic root of 6454018961 is about 1861.8445263437.

The spelling of 6454018961 in words is "six billion, four hundred fifty-four million, eighteen thousand, nine hundred sixty-one".