4821890857 has 8 divisors (see below), whose sum is σ = 5511171456. Its totient is φ = 4132720032.

The previous prime is 4821890831. The next prime is 4821890873. The reversal of 4821890857 is 7580981284.

It is a happy number.

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

It is not a de Polignac number, because 4821890857 - 2¹⁹ = 4821366569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4821890807) 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, 118308 + ... + 153754.

It is an arithmetic number, because the mean of its divisors is an integer number (688896432).

Almost surely, 2^4821890857 is an apocalyptic number.

It is an amenable number.

4821890857 is a deficient number, since it is larger than the sum of its proper divisors (689280599).

4821890857 is a wasteful number, since it uses less digits than its factorization.

4821890857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54887.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The square root of 4821890857 is about 69439.8362397263. The cubic root of 4821890857 is about 1689.4258120808.

The spelling of 4821890857 in words is "four billion, eight hundred twenty-one million, eight hundred ninety thousand, eight hundred fifty-seven".