1005481001 has 8 divisors (see below), whose sum is σ = 1186189824. Its totient is φ = 834039360.

The previous prime is 1005480979. The next prime is 1005481003. The reversal of 1005481001 is 1001845001.

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

It is not a de Polignac number, because 1005481001 - 2²² = 1001286697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005481003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2316560 + ... + 2316993.

It is an arithmetic number, because the mean of its divisors is an integer number (148273728).

Almost surely, 2^1005481001 is an apocalyptic number.

It is an amenable number.

1005481001 is a deficient number, since it is larger than the sum of its proper divisors (180708823).

1005481001 is an equidigital number, since it uses as much as digits as its factorization.

1005481001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633591.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1005481001 is about 31709.3204121438. The cubic root of 1005481001 is about 1001.8236725301.

The spelling of 1005481001 in words is "one billion, five million, four hundred eighty-one thousand, one".