378457613 has 2 divisors, whose sum is σ = 378457614. Its totient is φ = 378457612.

The previous prime is 378457601. The next prime is 378457631. The reversal of 378457613 is 316754873.

Together with next prime (378457631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249703204 + 128754409 = 15802^2 + 11347^2 .

It is a cyclic number.

It is not a de Polignac number, because 378457613 - 2¹⁸ = 378195469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378457643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189228806 + 189228807.

It is an arithmetic number, because the mean of its divisors is an integer number (189228807).

Almost surely, 2^378457613 is an apocalyptic number.

It is an amenable number.

378457613 is a deficient number, since it is larger than the sum of its proper divisors (1).

378457613 is an equidigital number, since it uses as much as digits as its factorization.

378457613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 378457613 is about 19453.9870720631. The cubic root of 378457613 is about 723.3343373645.

The spelling of 378457613 in words is "three hundred seventy-eight million, four hundred fifty-seven thousand, six hundred thirteen".