4278385641 has 8 divisors (see below), whose sum is σ = 5952536640. Its totient is φ = 2728245872.

The previous prime is 4278385633. The next prime is 4278385651. The reversal of 4278385641 is 1465838724.

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 4278385641 - 2³ = 4278385633 is a prime.

It is a super-2 number, since 2×4278385641² = 36609167386229961762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4278385651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31002726 + ... + 31002863.

It is an arithmetic number, because the mean of its divisors is an integer number (744067080).

Almost surely, 2^4278385641 is an apocalyptic number.

It is an amenable number.

4278385641 is a deficient number, since it is larger than the sum of its proper divisors (1674150999).

4278385641 is a wasteful number, since it uses less digits than its factorization.

4278385641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62005615.

The product of its digits is 1290240, while the sum is 48.

The square root of 4278385641 is about 65409.3696728534. The cubic root of 4278385641 is about 1623.4041157159.

The spelling of 4278385641 in words is "four billion, two hundred seventy-eight million, three hundred eighty-five thousand, six hundred forty-one".