381048449 has 2 divisors, whose sum is σ = 381048450. Its totient is φ = 381048448.

The previous prime is 381048407. The next prime is 381048509. The reversal of 381048449 is 944840183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325441600 + 55606849 = 18040^2 + 7457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381048449 is a prime.

It is not a weakly prime, because it can be changed into another prime (381048749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190524224 + 190524225.

It is an arithmetic number, because the mean of its divisors is an integer number (190524225).

Almost surely, 2^381048449 is an apocalyptic number.

It is an amenable number.

381048449 is a deficient number, since it is larger than the sum of its proper divisors (1).

381048449 is an equidigital number, since it uses as much as digits as its factorization.

381048449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 381048449 is about 19520.4623152219. The cubic root of 381048449 is about 724.9811800109.

The spelling of 381048449 in words is "three hundred eighty-one million, forty-eight thousand, four hundred forty-nine".