3145440197 has 2 divisors, whose sum is σ = 3145440198. Its totient is φ = 3145440196.

The previous prime is 3145440191. The next prime is 3145440227. The reversal of 3145440197 is 7910445413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3142050916 + 3389281 = 56054^2 + 1841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3145440197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3145440197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3145440191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572720098 + 1572720099.

It is an arithmetic number, because the mean of its divisors is an integer number (1572720099).

Almost surely, 2^3145440197 is an apocalyptic number.

It is an amenable number.

3145440197 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145440197 is an equidigital number, since it uses as much as digits as its factorization.

3145440197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 3145440197 is about 56084.2241365609. The cubic root of 3145440197 is about 1465.1895442919.

The spelling of 3145440197 in words is "three billion, one hundred forty-five million, four hundred forty thousand, one hundred ninety-seven".