4890158921 has 2 divisors, whose sum is σ = 4890158922. Its totient is φ = 4890158920.

The previous prime is 4890158899. The next prime is 4890158941. The reversal of 4890158921 is 1298510984.

4890158921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4728487696 + 161671225 = 68764^2 + 12715^2 .

It is a cyclic number.

It is not a de Polignac number, because 4890158921 - 2⁶ = 4890158857 is a prime.

It is not a weakly prime, because it can be changed into another prime (4890158941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445079460 + 2445079461.

It is an arithmetic number, because the mean of its divisors is an integer number (2445079461).

Almost surely, 2^4890158921 is an apocalyptic number.

It is an amenable number.

4890158921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4890158921 is an equidigital number, since it uses as much as digits as its factorization.

4890158921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 4890158921 is about 69929.6712490485. The cubic root of 4890158921 is about 1697.3614108873.

The spelling of 4890158921 in words is "four billion, eight hundred ninety million, one hundred fifty-eight thousand, nine hundred twenty-one".