1063830821 has 2 divisors, whose sum is σ = 1063830822. Its totient is φ = 1063830820.

The previous prime is 1063830791. The next prime is 1063830847. The reversal of 1063830821 is 1280383601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016908321 + 46922500 = 31889^2 + 6850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1063830821 is a prime.

It is a super-2 number, since 2×1063830821² = 2263472031419068082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1063830851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531915410 + 531915411.

It is an arithmetic number, because the mean of its divisors is an integer number (531915411).

Almost surely, 2^1063830821 is an apocalyptic number.

It is an amenable number.

1063830821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1063830821 is an equidigital number, since it uses as much as digits as its factorization.

1063830821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1063830821 is about 32616.4195000003. The cubic root of 1063830821 is about 1020.8396332043.

The spelling of 1063830821 in words is "one billion, sixty-three million, eight hundred thirty thousand, eight hundred twenty-one".