1228381411 has 4 divisors (see below), whose sum is σ = 1230017824. Its totient is φ = 1226745000.

The previous prime is 1228381409. The next prime is 1228381433. The reversal of 1228381411 is 1141838221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1228381411 - 2¹ = 1228381409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228381481) 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 in 3 ways as a sum of consecutive naturals, for example, 817080 + ... + 818581.

It is an arithmetic number, because the mean of its divisors is an integer number (307504456).

Almost surely, 2^1228381411 is an apocalyptic number.

1228381411 is a deficient number, since it is larger than the sum of its proper divisors (1636413).

1228381411 is an equidigital number, since it uses as much as digits as its factorization.

1228381411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636412.

The product of its digits is 3072, while the sum is 31.

The square root of 1228381411 is about 35048.2725822543. The cubic root of 1228381411 is about 1070.9710842401.

The spelling of 1228381411 in words is "one billion, two hundred twenty-eight million, three hundred eighty-one thousand, four hundred eleven".