1085980001 has 4 divisors (see below), whose sum is σ = 1086052500. Its totient is φ = 1085907504.

The previous prime is 1085979989. The next prime is 1085980109. The reversal of 1085980001 is 1000895801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1000895801 = 1523 ⋅657187.

It can be written as a sum of positive squares in 2 ways, for example, as 100020001 + 985960000 = 10001^2 + 31400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085980001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1085980001.

It is not an unprimeable number, because it can be changed into a prime (1085980501) 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, 4526 + ... + 46823.

It is an arithmetic number, because the mean of its divisors is an integer number (271513125).

Almost surely, 2^1085980001 is an apocalyptic number.

It is an amenable number.

1085980001 is a deficient number, since it is larger than the sum of its proper divisors (72499).

1085980001 is an equidigital number, since it uses as much as digits as its factorization.

1085980001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72498.

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

The square root of 1085980001 is about 32954.2106717791. The cubic root of 1085980001 is about 1027.8757240114.

The spelling of 1085980001 in words is "one billion, eighty-five million, nine hundred eighty thousand, one".