1085000981 has 4 divisors (see below), whose sum is σ = 1085172000. Its totient is φ = 1084829964.

The previous prime is 1085000953. The next prime is 1085001017. The reversal of 1085000981 is 1890005801.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085000981 is a prime.

It is a super-2 number, since 2×1085000981² = 2354454257541924722, 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 (1085000941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75611 + ... + 88808.

It is an arithmetic number, because the mean of its divisors is an integer number (271293000).

Almost surely, 2^1085000981 is an apocalyptic number.

It is an amenable number.

1085000981 is a deficient number, since it is larger than the sum of its proper divisors (171019).

1085000981 is an equidigital number, since it uses as much as digits as its factorization.

1085000981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171018.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1085000981 is about 32939.3530750074. The cubic root of 1085000981 is about 1027.5667516420.

The spelling of 1085000981 in words is "one billion, eighty-five million, nine hundred eighty-one", and thus it is an aban number.