378561607 has 2 divisors, whose sum is σ = 378561608. Its totient is φ = 378561606.

The previous prime is 378561581. The next prime is 378561619. The reversal of 378561607 is 706165873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378561607 - 2⁷ = 378561479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378561647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189280803 + 189280804.

It is an arithmetic number, because the mean of its divisors is an integer number (189280804).

Almost surely, 2^378561607 is an apocalyptic number.

378561607 is a deficient number, since it is larger than the sum of its proper divisors (1).

378561607 is an equidigital number, since it uses as much as digits as its factorization.

378561607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 378561607 is about 19456.6597081822. The cubic root of 378561607 is about 723.4005848029.

The spelling of 378561607 in words is "three hundred seventy-eight million, five hundred sixty-one thousand, six hundred seven".