2945943019 has 2 divisors, whose sum is σ = 2945943020. Its totient is φ = 2945943018.

The previous prime is 2945942981. The next prime is 2945943031. The reversal of 2945943019 is 9103495492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2945943019 - 2¹⁵ = 2945910251 is a prime.

It is a super-2 number, since 2×2945943019² = 17357160542389668722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2945943019.

It is not a weakly prime, because it can be changed into another prime (2945943419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472971509 + 1472971510.

It is an arithmetic number, because the mean of its divisors is an integer number (1472971510).

Almost surely, 2^2945943019 is an apocalyptic number.

2945943019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2945943019 is an equidigital number, since it uses as much as digits as its factorization.

2945943019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 2945943019 is about 54276.5420692955. The cubic root of 2945943019 is about 1433.5343838704.

The spelling of 2945943019 in words is "two billion, nine hundred forty-five million, nine hundred forty-three thousand, nineteen".