1268019841 has 16 divisors (see below), whose sum is σ = 1394870400. Its totient is φ = 1143141120.

The previous prime is 1268019839. The next prime is 1268019847. The reversal of 1268019841 is 1489108621.

It is not a de Polignac number, because 1268019841 - 2¹ = 1268019839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1268019794 and 1268019803.

It is not an unprimeable number, because it can be changed into a prime (1268019847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815721 + ... + 817273.

It is an arithmetic number, because the mean of its divisors is an integer number (87179400).

Almost surely, 2^1268019841 is an apocalyptic number.

1268019841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1268019841 is a deficient number, since it is larger than the sum of its proper divisors (126850559).

1268019841 is a wasteful number, since it uses less digits than its factorization.

1268019841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1268019841 is about 35609.2662238356. The cubic root of 1268019841 is about 1082.3690112398.

The spelling of 1268019841 in words is "one billion, two hundred sixty-eight million, nineteen thousand, eight hundred forty-one".