1001000001038 has 4 divisors (see below), whose sum is σ = 1501500001560. Its totient is φ = 500500000518.

The previous prime is 1001000001037. The next prime is 1001000001059. The reversal of 1001000001038 is 8301000001001.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001000001037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250250000258 + ... + 250250000261.

It is an arithmetic number, because the mean of its divisors is an integer number (375375000390).

Almost surely, 2^{1001000001038} is an apocalyptic number.

1001000001038 is a deficient number, since it is larger than the sum of its proper divisors (500500000522).

1001000001038 is an equidigital number, since it uses as much as digits as its factorization.

1001000001038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500500000521.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1001000001038 its reverse (8301000001001), we get a palindrome (9302000002039).

The spelling of 1001000001038 in words is "one trillion, one billion, one thousand, thirty-eight".