1238009004 has 18 divisors (see below), whose sum is σ = 3129411740. Its totient is φ = 412669656.

The previous prime is 1238008991. The next prime is 1238009009. The reversal of 1238009004 is 4009008321.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1238009009) 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 5 ways as a sum of consecutive naturals, for example, 17194534 + ... + 17194605.

Almost surely, 2^1238009004 is an apocalyptic number.

It is an amenable number.

1238009004 is an abundant number, since it is smaller than the sum of its proper divisors (1891402736).

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

1238009004 is a wasteful number, since it uses less digits than its factorization.

1238009004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34389149 (or 34389144 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1238009004 is about 35185.3521227229. The cubic root of 1238009004 is about 1073.7617627480.

The spelling of 1238009004 in words is "one billion, two hundred thirty-eight million, nine thousand, four".