1001979885 has 8 divisors (see below), whose sum is σ = 1603167840. Its totient is φ = 534389264.

The previous prime is 1001979859. The next prime is 1001979907. The reversal of 1001979885 is 5889791001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001979885 - 2⁷ = 1001979757 is a prime.

It is a super-2 number, since 2×1001979885² = 2007927379889226450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33399315 + ... + 33399344.

It is an arithmetic number, because the mean of its divisors is an integer number (200395980).

Almost surely, 2^1001979885 is an apocalyptic number.

1001979885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001979885 is a deficient number, since it is larger than the sum of its proper divisors (601187955).

1001979885 is an equidigital number, since it uses as much as digits as its factorization.

1001979885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66798667.

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

The square root of 1001979885 is about 31654.0658525884. The cubic root of 1001979885 is about 1000.6595265957.

The spelling of 1001979885 in words is "one billion, one million, nine hundred seventy-nine thousand, eight hundred eighty-five".