3145440191 has 2 divisors, whose sum is σ = 3145440192. Its totient is φ = 3145440190.

The previous prime is 3145440169. The next prime is 3145440197. The reversal of 3145440191 is 1910445413.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3145440191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3145440197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572720095 + 1572720096.

It is an arithmetic number, because the mean of its divisors is an integer number (1572720096).

Almost surely, 2^3145440191 is an apocalyptic number.

3145440191 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145440191 is an equidigital number, since it uses as much as digits as its factorization.

3145440191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 3145440191 is about 56084.2240830699. The cubic root of 3145440191 is about 1465.1895433603.

The spelling of 3145440191 in words is "three billion, one hundred forty-five million, four hundred forty thousand, one hundred ninety-one".