381046453 has 2 divisors, whose sum is σ = 381046454. Its totient is φ = 381046452.

The previous prime is 381046439. The next prime is 381046489. The reversal of 381046453 is 354640183.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349764804 + 31281649 = 18702^2 + 5593^2 .

It is a cyclic number.

It is not a de Polignac number, because 381046453 - 2¹³ = 381038261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381046403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190523226 + 190523227.

It is an arithmetic number, because the mean of its divisors is an integer number (190523227).

Almost surely, 2^381046453 is an apocalyptic number.

It is an amenable number.

381046453 is a deficient number, since it is larger than the sum of its proper divisors (1).

381046453 is an equidigital number, since it uses as much as digits as its factorization.

381046453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 381046453 is about 19520.4111893167. The cubic root of 381046453 is about 724.9799141483.

The spelling of 381046453 in words is "three hundred eighty-one million, forty-six thousand, four hundred fifty-three".