2945663506 has 4 divisors (see below), whose sum is σ = 4418495262. Its totient is φ = 1472831752.

The previous prime is 2945663503. The next prime is 2945663519. The reversal of 2945663506 is 6053665492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2888525025 + 57138481 = 53745^2 + 7559^2 .

It is not an unprimeable number, because it can be changed into a prime (2945663503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736415875 + ... + 736415878.

Almost surely, 2^2945663506 is an apocalyptic number.

2945663506 is a deficient number, since it is larger than the sum of its proper divisors (1472831756).

2945663506 is a wasteful number, since it uses less digits than its factorization.

2945663506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472831755.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The square root of 2945663506 is about 54273.9671113141. The cubic root of 2945663506 is about 1433.4890442098.

The spelling of 2945663506 in words is "two billion, nine hundred forty-five million, six hundred sixty-three thousand, five hundred six".