1063948021 has 2 divisors, whose sum is σ = 1063948022. Its totient is φ = 1063948020.

The previous prime is 1063947979. The next prime is 1063948157. The reversal of 1063948021 is 1208493601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681940996 + 382007025 = 26114^2 + 19545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1063948021 - 2⁹ = 1063947509 is a prime.

It is a super-2 number, since 2×1063948021² = 2263970782779632882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1063948321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531974010 + 531974011.

It is an arithmetic number, because the mean of its divisors is an integer number (531974011).

Almost surely, 2^1063948021 is an apocalyptic number.

It is an amenable number.

1063948021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1063948021 is an equidigital number, since it uses as much as digits as its factorization.

1063948021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1063948021 is about 32618.2160916259. The cubic root of 1063948021 is about 1020.8771197449.

The spelling of 1063948021 in words is "one billion, sixty-three million, nine hundred forty-eight thousand, twenty-one".