1001889975 has 12 divisors (see below), whose sum is σ = 1656458216. Its totient is φ = 534341280.

The previous prime is 1001889953. The next prime is 1001889997. The reversal of 1001889975 is 5799881001.

It is an interprime number because it is at equal distance from previous prime (1001889953) and next prime (1001889997).

It is not a de Polignac number, because 1001889975 - 2¹¹ = 1001887927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6679192 + ... + 6679341.

Almost surely, 2^1001889975 is an apocalyptic number.

1001889975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001889975 is a deficient number, since it is larger than the sum of its proper divisors (654568241).

1001889975 is a wasteful number, since it uses less digits than its factorization.

1001889975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13358546 (or 13358541 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 1001889975 is about 31652.6456240233. The cubic root of 1001889975 is about 1000.6295951934.

The spelling of 1001889975 in words is "one billion, one million, eight hundred eighty-nine thousand, nine hundred seventy-five".