1238828994 has 48 divisors (see below), whose sum is σ = 3042748800. Its totient is φ = 361114848.

The previous prime is 1238828977. The next prime is 1238829019. The reversal of 1238828994 is 4998288321.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1238828994.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134874 + ... + 143765.

It is an arithmetic number, because the mean of its divisors is an integer number (63390600).

Almost surely, 2^1238828994 is an apocalyptic number.

1238828994 is an abundant number, since it is smaller than the sum of its proper divisors (1803919806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1238828994 is a wasteful number, since it uses less digits than its factorization.

1238828994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278679 (or 278676 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 1238828994 is about 35197.0026280648. The cubic root of 1238828994 is about 1073.9987776065.

The spelling of 1238828994 in words is "one billion, two hundred thirty-eight million, eight hundred twenty-eight thousand, nine hundred ninety-four".