1005840995 has 4 divisors (see below), whose sum is σ = 1207009200. Its totient is φ = 804672792.

The previous prime is 1005840977. The next prime is 1005841003. The reversal of 1005840995 is 5990485001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1005840995 - 2⁶ = 1005840931 is a prime.

It is a super-2 number, since 2×1005840995² = 2023432214445180050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100584095 + ... + 100584104.

It is an arithmetic number, because the mean of its divisors is an integer number (301752300).

Almost surely, 2^1005840995 is an apocalyptic number.

1005840995 is a deficient number, since it is larger than the sum of its proper divisors (201168205).

1005840995 is an equidigital number, since it uses as much as digits as its factorization.

1005840995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201168204.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 1005840995 is about 31714.9963739553. The cubic root of 1005840995 is about 1001.9432197843.

The spelling of 1005840995 in words is "one billion, five million, eight hundred forty thousand, nine hundred ninety-five".