1005060491 has 4 divisors (see below), whose sum is σ = 1007231712. Its totient is φ = 1002889272.

The previous prime is 1005060487. The next prime is 1005060493. The reversal of 1005060491 is 1940605001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1940605001 = 3637 ⋅533573.

It is a cyclic number.

It is not a de Polignac number, because 1005060491 - 2² = 1005060487 is a prime.

It is a super-2 number, since 2×1005060491² = 2020293181138322162, which contains 22 as substring.

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 1005060491.

It is not an unprimeable number, because it can be changed into a prime (1005060493) 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, 1084916 + ... + 1085841.

It is an arithmetic number, because the mean of its divisors is an integer number (251807928).

Almost surely, 2^1005060491 is an apocalyptic number.

1005060491 is a deficient number, since it is larger than the sum of its proper divisors (2171221).

1005060491 is an equidigital number, since it uses as much as digits as its factorization.

1005060491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171220.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1005060491 is about 31702.6890184413. The cubic root of 1005060491 is about 1001.6839929094.

Adding to 1005060491 its reverse (1940605001), we get a palindrome (2945665492).

The spelling of 1005060491 in words is "one billion, five million, sixty thousand, four hundred ninety-one".