1904246489 has 2 divisors, whose sum is σ = 1904246490. Its totient is φ = 1904246488.

The previous prime is 1904246453. The next prime is 1904246497. The reversal of 1904246489 is 9846424091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1402128025 + 502118464 = 37445^2 + 22408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1904246489 - 2⁸ = 1904246233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1904246419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952123244 + 952123245.

It is an arithmetic number, because the mean of its divisors is an integer number (952123245).

Almost surely, 2^1904246489 is an apocalyptic number.

It is an amenable number.

1904246489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1904246489 is an equidigital number, since it uses as much as digits as its factorization.

1904246489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 1904246489 is about 43637.6728183344. The cubic root of 1904246489 is about 1239.4843695983.

The spelling of 1904246489 in words is "one billion, nine hundred four million, two hundred forty-six thousand, four hundred eighty-nine".