1905477449 has 2 divisors, whose sum is σ = 1905477450. Its totient is φ = 1905477448.

The previous prime is 1905477439. The next prime is 1905477499. The reversal of 1905477449 is 9447745091.

It is an a-pointer prime, because the next prime (1905477499) can be obtained adding 1905477449 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1250117449 + 655360000 = 35357^2 + 25600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1905477449 - 2⁴ = 1905477433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1905477397 and 1905477406.

It is not a weakly prime, because it can be changed into another prime (1905477439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952738724 + 952738725.

It is an arithmetic number, because the mean of its divisors is an integer number (952738725).

Almost surely, 2^1905477449 is an apocalyptic number.

It is an amenable number.

1905477449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1905477449 is an equidigital number, since it uses as much as digits as its factorization.

1905477449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1905477449 is about 43651.7748665504. The cubic root of 1905477449 is about 1239.7513915835.

The spelling of 1905477449 in words is "one billion, nine hundred five million, four hundred seventy-seven thousand, four hundred forty-nine".