1641034979 has 2 divisors, whose sum is σ = 1641034980. Its totient is φ = 1641034978.

The previous prime is 1641034961. The next prime is 1641034991. The reversal of 1641034979 is 9794301461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1641034979 - 2⁸ = 1641034723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641034279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820517489 + 820517490.

It is an arithmetic number, because the mean of its divisors is an integer number (820517490).

Almost surely, 2^1641034979 is an apocalyptic number.

1641034979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641034979 is an equidigital number, since it uses as much as digits as its factorization.

1641034979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1641034979 is about 40509.6899395688. The cubic root of 1641034979 is about 1179.5217297139.

The spelling of 1641034979 in words is "one billion, six hundred forty-one million, thirty-four thousand, nine hundred seventy-nine".