378224453 has 2 divisors, whose sum is σ = 378224454. Its totient is φ = 378224452.

The previous prime is 378224423. The next prime is 378224477. The reversal of 378224453 is 354422873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355020964 + 23203489 = 18842^2 + 4817^2 .

It is a cyclic number.

It is not a de Polignac number, because 378224453 - 2¹⁶ = 378158917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378224423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189112226 + 189112227.

It is an arithmetic number, because the mean of its divisors is an integer number (189112227).

Almost surely, 2^378224453 is an apocalyptic number.

It is an amenable number.

378224453 is a deficient number, since it is larger than the sum of its proper divisors (1).

378224453 is an equidigital number, since it uses as much as digits as its factorization.

378224453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 38.

The square root of 378224453 is about 19447.9935468932. The cubic root of 378224453 is about 723.1857630155.

The spelling of 378224453 in words is "three hundred seventy-eight million, two hundred twenty-four thousand, four hundred fifty-three".