4478157643 has 8 divisors (see below), whose sum is σ = 4659969600. Its totient is φ = 4299876168.

The previous prime is 4478157631. The next prime is 4478157659. The reversal of 4478157643 is 3467518744.

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 4478157643 - 2⁵ = 4478157611 is a prime.

It is a super-3 number, since 3×4478157643³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4478157683) 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, 880033 + ... + 885106.

It is an arithmetic number, because the mean of its divisors is an integer number (582496200).

Almost surely, 2^4478157643 is an apocalyptic number.

4478157643 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4478157643 is a deficient number, since it is larger than the sum of its proper divisors (181811957).

4478157643 is a wasteful number, since it uses less digits than its factorization.

4478157643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765241.

The product of its digits is 2257920, while the sum is 49.

The square root of 4478157643 is about 66919.0379712679. The cubic root of 4478157643 is about 1648.2881104028.

The spelling of 4478157643 in words is "four billion, four hundred seventy-eight million, one hundred fifty-seven thousand, six hundred forty-three".