1904313805 has 16 divisors (see below), whose sum is σ = 2336221440. Its totient is φ = 1489488832.

The previous prime is 1904313751. The next prime is 1904313833. The reversal of 1904313805 is 5083134091.

It is a cyclic number.

It is not a de Polignac number, because 1904313805 - 2¹¹ = 1904311757 is a prime.

It is a super-2 number, since 2×1904313805² = 7252822135827156050, which contains 22 as substring.

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, 256962 + ... + 264268.

It is an arithmetic number, because the mean of its divisors is an integer number (146013840).

Almost surely, 2^1904313805 is an apocalyptic number.

It is an amenable number.

1904313805 is a deficient number, since it is larger than the sum of its proper divisors (431907635).

1904313805 is a wasteful number, since it uses less digits than its factorization.

1904313805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8468.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1904313805 is about 43638.4441175439. Note that the first 3 decimals coincide. The cubic root of 1904313805 is about 1239.4989748761.

Adding to 1904313805 its reverse (5083134091), we get a palindrome (6987447896).

The spelling of 1904313805 in words is "one billion, nine hundred four million, three hundred thirteen thousand, eight hundred five".