1001985238 has 8 divisors (see below), whose sum is σ = 1516278888. Its totient is φ = 496558944.

The previous prime is 1001985233. The next prime is 1001985239. The reversal of 1001985238 is 8325891001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1001985197 and 1001985206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001985233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216556 + ... + 2217007.

It is an arithmetic number, because the mean of its divisors is an integer number (189534861).

Almost surely, 2^1001985238 is an apocalyptic number.

1001985238 is a deficient number, since it is larger than the sum of its proper divisors (514293650).

1001985238 is a wasteful number, since it uses less digits than its factorization.

1001985238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433678.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1001985238 is about 31654.1504071741. The cubic root of 1001985238 is about 1000.6613085746.

The spelling of 1001985238 in words is "one billion, one million, nine hundred eighty-five thousand, two hundred thirty-eight".