1238444426 has 16 divisors (see below), whose sum is σ = 1878888960. Its totient is φ = 612166800.

The previous prime is 1238444413. The next prime is 1238444443. The reversal of 1238444426 is 6244448321.

It is a self number, because there is not a number n which added to its sum of digits gives 1238444426.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 140975 + ... + 149501.

It is an arithmetic number, because the mean of its divisors is an integer number (117430560).

Almost surely, 2^1238444426 is an apocalyptic number.

1238444426 is a deficient number, since it is larger than the sum of its proper divisors (640444534).

1238444426 is a wasteful number, since it uses less digits than its factorization.

1238444426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9349.

The product of its digits is 147456, while the sum is 38.

The square root of 1238444426 is about 35191.5391251931. The cubic root of 1238444426 is about 1073.8876327781.

The spelling of 1238444426 in words is "one billion, two hundred thirty-eight million, four hundred forty-four thousand, four hundred twenty-six".