1000960981 has 4 divisors (see below), whose sum is σ = 1001024512. Its totient is φ = 1000897452.

The previous prime is 1000960973. The next prime is 1000961011. The reversal of 1000960981 is 1890690001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1000960981 - 2³ = 1000960973 is a prime.

It is a super-2 number, since 2×1000960981² = 2003845770968964722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000960931) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11626 + ... + 46228.

It is an arithmetic number, because the mean of its divisors is an integer number (250256128).

Almost surely, 2^1000960981 is an apocalyptic number.

It is an amenable number.

1000960981 is a deficient number, since it is larger than the sum of its proper divisors (63531).

1000960981 is an equidigital number, since it uses as much as digits as its factorization.

1000960981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63530.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1000960981 is about 31637.9673967845. The cubic root of 1000960981 is about 1000.3202244454.

The spelling of 1000960981 in words is "one billion, nine hundred sixty thousand, nine hundred eighty-one".