381712453 has 2 divisors, whose sum is σ = 381712454. Its totient is φ = 381712452.

The previous prime is 381712423. The next prime is 381712459. The reversal of 381712453 is 354217183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222397569 + 159314884 = 14913^2 + 12622^2 .

It is an emirp because it is prime and its reverse (354217183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381712453 - 2⁵ = 381712421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381712459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190856226 + 190856227.

It is an arithmetic number, because the mean of its divisors is an integer number (190856227).

Almost surely, 2^381712453 is an apocalyptic number.

It is an amenable number.

381712453 is a deficient number, since it is larger than the sum of its proper divisors (1).

381712453 is an equidigital number, since it uses as much as digits as its factorization.

381712453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 381712453 is about 19537.4628086658. The cubic root of 381712453 is about 725.4020460504.

The spelling of 381712453 in words is "three hundred eighty-one million, seven hundred twelve thousand, four hundred fifty-three".