2068148921 has 2 divisors, whose sum is σ = 2068148922. Its totient is φ = 2068148920.

The previous prime is 2068148909. The next prime is 2068149043. The reversal of 2068148921 is 1298418602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2006054521 + 62094400 = 44789^2 + 7880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2068148921 - 2²² = 2063954617 is a prime.

It is not a weakly prime, because it can be changed into another prime (2068141921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034074460 + 1034074461.

It is an arithmetic number, because the mean of its divisors is an integer number (1034074461).

Almost surely, 2^2068148921 is an apocalyptic number.

It is an amenable number.

2068148921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2068148921 is an equidigital number, since it uses as much as digits as its factorization.

2068148921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 2068148921 is about 45476.9053586543. The cubic root of 2068148921 is about 1274.0718958413.

The spelling of 2068148921 in words is "two billion, sixty-eight million, one hundred forty-eight thousand, nine hundred twenty-one".