2942909649 has 6 divisors (see below), whose sum is σ = 4250869506. Its totient is φ = 1961939760.

The previous prime is 2942909633. The next prime is 2942909693. The reversal of 2942909649 is 9469092492.

2942909649 is a `hidden beast` number, since 294 + 290 + 9 + 64 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1722665025 + 1220244624 = 41505^2 + 34932^2 .

It is not a de Polignac number, because 2942909649 - 2⁴ = 2942909633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2942909595 and 2942909604.

It is not an unprimeable number, because it can be changed into a prime (2942909699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163494972 + ... + 163494989.

It is an arithmetic number, because the mean of its divisors is an integer number (708478251).

Almost surely, 2^2942909649 is an apocalyptic number.

It is an amenable number.

2942909649 is a deficient number, since it is larger than the sum of its proper divisors (1307959857).

2942909649 is a wasteful number, since it uses less digits than its factorization.

2942909649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326989967 (or 326989964 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 2942909649 is about 54248.5912167311. The cubic root of 2942909649 is about 1433.0421890659.

The spelling of 2942909649 in words is "two billion, nine hundred forty-two million, nine hundred nine thousand, six hundred forty-nine".