1001686938 has 32 divisors (see below), whose sum is σ = 2389118976. Its totient is φ = 273752688.

The previous prime is 1001686921. The next prime is 1001686951. The reversal of 1001686938 is 8396861001.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1001686938.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 517506 + ... + 519437.

It is an arithmetic number, because the mean of its divisors is an integer number (74659968).

Almost surely, 2^1001686938 is an apocalyptic number.

1001686938 is an abundant number, since it is smaller than the sum of its proper divisors (1387432038).

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

1001686938 is a wasteful number, since it uses less digits than its factorization.

1001686938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036978.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1001686938 is about 31649.4381940659. The cubic root of 1001686938 is about 1000.5619967671.

The spelling of 1001686938 in words is "one billion, one million, six hundred eighty-six thousand, nine hundred thirty-eight".