4020658961 has 8 divisors (see below), whose sum is σ = 4386720000. Its totient is φ = 3654689040.

The previous prime is 4020658949. The next prime is 4020658979. The reversal of 4020658961 is 1698560204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4020658961 - 2¹⁰ = 4020657937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4020658921) by changing a digit.

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, 96815 + ... + 131963.

It is an arithmetic number, because the mean of its divisors is an integer number (548340000).

Almost surely, 2^4020658961 is an apocalyptic number.

It is an amenable number.

4020658961 is a deficient number, since it is larger than the sum of its proper divisors (366061039).

4020658961 is a wasteful number, since it uses less digits than its factorization.

4020658961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45559.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 4020658961 is about 63408.6662925503. Note that the first 3 decimals coincide. The cubic root of 4020658961 is about 1590.1291986572.

The spelling of 4020658961 in words is "four billion, twenty million, six hundred fifty-eight thousand, nine hundred sixty-one".