4894618234421 has 2 divisors, whose sum is σ = 4894618234422. Its totient is φ = 4894618234420.

The previous prime is 4894618234403. The next prime is 4894618234423. The reversal of 4894618234421 is 1244328164984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3109826440900 + 1784791793521 = 1763470^2 + 1335961^2 .

It is a cyclic number.

It is not a de Polignac number, because 4894618234421 - 2⁶ = 4894618234357 is a prime.

Together with 4894618234423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4894618234423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2447309117210 + 2447309117211.

It is an arithmetic number, because the mean of its divisors is an integer number (2447309117211).

Almost surely, 2^{4894618234421} is an apocalyptic number.

It is an amenable number.

4894618234421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4894618234421 is an equidigital number, since it uses as much as digits as its factorization.

4894618234421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10616832, while the sum is 56.

The spelling of 4894618234421 in words is "four trillion, eight hundred ninety-four billion, six hundred eighteen million, two hundred thirty-four thousand, four hundred twenty-one".