1019040205 has 16 divisors (see below), whose sum is σ = 1288010880. Its totient is φ = 771844032.

The previous prime is 1019040181. The next prime is 1019040227. The reversal of 1019040205 is 5020409101.

It is a cyclic number.

It is not a de Polignac number, because 1019040205 - 2²⁵ = 985485773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252312 + ... + 256318.

It is an arithmetic number, because the mean of its divisors is an integer number (80500680).

Almost surely, 2^1019040205 is an apocalyptic number.

It is an amenable number.

1019040205 is a deficient number, since it is larger than the sum of its proper divisors (268970675).

1019040205 is a wasteful number, since it uses less digits than its factorization.

1019040205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6708.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1019040205 is about 31922.4091352767. The cubic root of 1019040205 is about 1006.3068747092.

Adding to 1019040205 its reverse (5020409101), we get a palindrome (6039449306).

The spelling of 1019040205 in words is "one billion, nineteen million, forty thousand, two hundred five".