1048123691 has 2 divisors, whose sum is σ = 1048123692. Its totient is φ = 1048123690.

The previous prime is 1048123673. The next prime is 1048123693. The reversal of 1048123691 is 1963218401.

It is a strong prime.

It is an emirp because it is prime and its reverse (1963218401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1048123691 - 2¹⁰ = 1048122667 is a prime.

Together with 1048123693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1048123693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524061845 + 524061846.

It is an arithmetic number, because the mean of its divisors is an integer number (524061846).

Almost surely, 2^1048123691 is an apocalyptic number.

1048123691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1048123691 is an equidigital number, since it uses as much as digits as its factorization.

1048123691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1048123691 is about 32374.7384699861. The cubic root of 1048123691 is about 1015.7905756351.

The spelling of 1048123691 in words is "one billion, forty-eight million, one hundred twenty-three thousand, six hundred ninety-one".