1005345419 has 4 divisors (see below), whose sum is σ = 1082679696. Its totient is φ = 928011144.

The previous prime is 1005345401. The next prime is 1005345443. The reversal of 1005345419 is 9145435001.

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 1005345419 - 2⁸ = 1005345163 is a prime.

It is a super-2 number, since 2×1005345419² = 2021438823008571122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005345449) 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, 38667119 + ... + 38667144.

It is an arithmetic number, because the mean of its divisors is an integer number (270669924).

Almost surely, 2^1005345419 is an apocalyptic number.

1005345419 is a deficient number, since it is larger than the sum of its proper divisors (77334277).

1005345419 is an equidigital number, since it uses as much as digits as its factorization.

1005345419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77334276.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1005345419 is about 31707.1824512996. The cubic root of 1005345419 is about 1001.7786408943.

The spelling of 1005345419 in words is "one billion, five million, three hundred forty-five thousand, four hundred nineteen".