1048441991 has 2 divisors, whose sum is σ = 1048441992. Its totient is φ = 1048441990.

The previous prime is 1048441963. The next prime is 1048442053. The reversal of 1048441991 is 1991448401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1048441991 - 2²⁶ = 981333127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1048441931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524220995 + 524220996.

It is an arithmetic number, because the mean of its divisors is an integer number (524220996).

Almost surely, 2^1048441991 is an apocalyptic number.

1048441991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1048441991 is an equidigital number, since it uses as much as digits as its factorization.

1048441991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1048441991 is about 32379.6539666501. The cubic root of 1048441991 is about 1015.8933921947.

The spelling of 1048441991 in words is "one billion, forty-eight million, four hundred forty-one thousand, nine hundred ninety-one".