4028668451 has 2 divisors, whose sum is σ = 4028668452. Its totient is φ = 4028668450.

The previous prime is 4028668417. The next prime is 4028668471. The reversal of 4028668451 is 1548668204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4028668451 - 2³⁰ = 2954926627 is a prime.

It is not a weakly prime, because it can be changed into another prime (4028668471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2014334225 + 2014334226.

It is an arithmetic number, because the mean of its divisors is an integer number (2014334226).

Almost surely, 2^4028668451 is an apocalyptic number.

4028668451 is a deficient number, since it is larger than the sum of its proper divisors (1).

4028668451 is an equidigital number, since it uses as much as digits as its factorization.

4028668451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 4028668451 is about 63471.7925617356. The cubic root of 4028668451 is about 1591.1843885521.

The spelling of 4028668451 in words is "four billion, twenty-eight million, six hundred sixty-eight thousand, four hundred fifty-one".