2945885657 has 8 divisors (see below), whose sum is σ = 3460900800. Its totient is φ = 2472071760.

The previous prime is 2945885653. The next prime is 2945885659. The reversal of 2945885657 is 7565885492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2945885657 - 2² = 2945885653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2945885596 and 2945885605.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10300157 + ... + 10300442.

It is an arithmetic number, because the mean of its divisors is an integer number (432612600).

Almost surely, 2^2945885657 is an apocalyptic number.

It is an amenable number.

2945885657 is a deficient number, since it is larger than the sum of its proper divisors (515015143).

2945885657 is a wasteful number, since it uses less digits than its factorization.

2945885657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20600623.

The product of its digits is 24192000, while the sum is 59.

The square root of 2945885657 is about 54276.0136432292. The cubic root of 2945885657 is about 1433.5250794436.

The spelling of 2945885657 in words is "two billion, nine hundred forty-five million, eight hundred eighty-five thousand, six hundred fifty-seven".