390195361 has 2 divisors, whose sum is σ = 390195362. Its totient is φ = 390195360.

The previous prime is 390195347. The next prime is 390195409. The reversal of 390195361 is 163591093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279524961 + 110670400 = 16719^2 + 10520^2 .

It is a cyclic number.

It is not a de Polignac number, because 390195361 - 2⁵ = 390195329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 390195361.

It is not a weakly prime, because it can be changed into another prime (390195301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195097680 + 195097681.

It is an arithmetic number, because the mean of its divisors is an integer number (195097681).

Almost surely, 2^390195361 is an apocalyptic number.

It is an amenable number.

390195361 is a deficient number, since it is larger than the sum of its proper divisors (1).

390195361 is an equidigital number, since it uses as much as digits as its factorization.

390195361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 390195361 is about 19753.3632832488. The cubic root of 390195361 is about 730.7363315303.

The spelling of 390195361 in words is "three hundred ninety million, one hundred ninety-five thousand, three hundred sixty-one".