2021868523 has 2 divisors, whose sum is σ = 2021868524. Its totient is φ = 2021868522.

The previous prime is 2021868461. The next prime is 2021868553. The reversal of 2021868523 is 3258681202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021868523 - 2⁹ = 2021868011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021868553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010934261 + 1010934262.

It is an arithmetic number, because the mean of its divisors is an integer number (1010934262).

Almost surely, 2^2021868523 is an apocalyptic number.

2021868523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021868523 is an equidigital number, since it uses as much as digits as its factorization.

2021868523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 2021868523 is about 44965.1923491938. The cubic root of 2021868523 is about 1264.4965158252.

The spelling of 2021868523 in words is "two billion, twenty-one million, eight hundred sixty-eight thousand, five hundred twenty-three".