1029796643 has 2 divisors, whose sum is σ = 1029796644. Its totient is φ = 1029796642.

The previous prime is 1029796613. The next prime is 1029796721. The reversal of 1029796643 is 3466979201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1029796643 - 2¹⁰ = 1029795619 is a prime.

It is a super-2 number, since 2×1029796643² = 2120962251868138898, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1029796613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514898321 + 514898322.

It is an arithmetic number, because the mean of its divisors is an integer number (514898322).

Almost surely, 2^1029796643 is an apocalyptic number.

1029796643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029796643 is an equidigital number, since it uses as much as digits as its factorization.

1029796643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 1029796643 is about 32090.4447304801. Note that the first 3 decimals coincide. The cubic root of 1029796643 is about 1009.8351667089.

The spelling of 1029796643 in words is "one billion, twenty-nine million, seven hundred ninety-six thousand, six hundred forty-three".