1228041473 has 4 divisors (see below), whose sum is σ = 1229988288. Its totient is φ = 1226094660.

The previous prime is 1228041469. The next prime is 1228041541. The reversal of 1228041473 is 3741408221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3741408221 = 61 ⋅61334561.

It is a cyclic number.

It is not a de Polignac number, because 1228041473 - 2² = 1228041469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1228041673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972461 + ... + 973722.

It is an arithmetic number, because the mean of its divisors is an integer number (307497072).

Almost surely, 2^1228041473 is an apocalyptic number.

It is an amenable number.

1228041473 is a deficient number, since it is larger than the sum of its proper divisors (1946815).

1228041473 is an equidigital number, since it uses as much as digits as its factorization.

1228041473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946814.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1228041473 is about 35043.4226781575. The cubic root of 1228041473 is about 1070.8722828544.

Adding to 1228041473 its reverse (3741408221), we get a palindrome (4969449694).

The spelling of 1228041473 in words is "one billion, two hundred twenty-eight million, forty-one thousand, four hundred seventy-three".