1228948443 has 96 divisors (see below), whose sum is σ = 2063093760. Its totient is φ = 727483680.

The previous prime is 1228948439. The next prime is 1228948447. The reversal of 1228948443 is 3448498221.

1228948443 is a `hidden beast` number, since 122 + 8 + 9 + 484 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (1228948439) and next prime (1228948447).

It is not a de Polignac number, because 1228948443 - 2² = 1228948439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228948447) 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 95 ways as a sum of consecutive naturals, for example, 7539480 + ... + 7539642.

It is an arithmetic number, because the mean of its divisors is an integer number (21490560).

Almost surely, 2^1228948443 is an apocalyptic number.

1228948443 is a deficient number, since it is larger than the sum of its proper divisors (834145317).

1228948443 is a wasteful number, since it uses less digits than its factorization.

1228948443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 279 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 1228948443 is about 35056.3609491915. The cubic root of 1228948443 is about 1071.1358488789.

It can be divided in two parts, 122 and 8948443, that added together give a triangular number (8948565 = T₄₂₃₀).

The spelling of 1228948443 in words is "one billion, two hundred twenty-eight million, nine hundred forty-eight thousand, four hundred forty-three".