4071980657 has 4 divisors (see below), whose sum is σ = 4076149476. Its totient is φ = 4067811840.

The previous prime is 4071980629. The next prime is 4071980659. The reversal of 4071980657 is 7560891704.

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 3959429776 + 112550881 = 62924^2 + 10609^2 .

It is a cyclic number.

It is not a de Polignac number, because 4071980657 - 2⁶ = 4071980593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4071980659) 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, 2082944 + ... + 2084897.

It is an arithmetic number, because the mean of its divisors is an integer number (1019037369).

Almost surely, 2^4071980657 is an apocalyptic number.

It is an amenable number.

4071980657 is a deficient number, since it is larger than the sum of its proper divisors (4168819).

4071980657 is an equidigital number, since it uses as much as digits as its factorization.

4071980657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168818.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 4071980657 is about 63812.0729721265. The cubic root of 4071980657 is about 1596.8663480278.

The spelling of 4071980657 in words is "four billion, seventy-one million, nine hundred eighty thousand, six hundred fifty-seven".