2945885656 has 32 divisors (see below), whose sum is σ = 6530292000. Its totient is φ = 1218986496.

The previous prime is 2945885653. The next prime is 2945885659. The reversal of 2945885656 is 6565885492.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2945885653) and next prime (2945885659).

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 2945885656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945885651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905361 + ... + 908608.

It is an arithmetic number, because the mean of its divisors is an integer number (204071625).

Almost surely, 2^2945885656 is an apocalyptic number.

It is an amenable number.

2945885656 is an abundant number, since it is smaller than the sum of its proper divisors (3584406344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2945885656 is a wasteful number, since it uses less digits than its factorization.

2945885656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814011 (or 1814007 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 58.

The square root of 2945885656 is about 54276.0136340170. The cubic root of 2945885656 is about 1433.5250792814.

The spelling of 2945885656 in words is "two billion, nine hundred forty-five million, eight hundred eighty-five thousand, six hundred fifty-six".