2945492509 has 2 divisors, whose sum is σ = 2945492510. Its totient is φ = 2945492508.

The previous prime is 2945492489. The next prime is 2945492551. The reversal of 2945492509 is 9052945492.

2945492509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2626870009 + 318622500 = 51253^2 + 17850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2945492509 - 2¹¹ = 2945490461 is a prime.

It is a super-2 number, since 2×2945492509² = 17351852241150230162, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2945492569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472746254 + 1472746255.

It is an arithmetic number, because the mean of its divisors is an integer number (1472746255).

Almost surely, 2^2945492509 is an apocalyptic number.

It is an amenable number.

2945492509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2945492509 is an equidigital number, since it uses as much as digits as its factorization.

2945492509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 2945492509 is about 54272.3917751927. The cubic root of 2945492509 is about 1433.4613054599.

The spelling of 2945492509 in words is "two billion, nine hundred forty-five million, four hundred ninety-two thousand, five hundred nine".