2945838621 has 32 divisors (see below), whose sum is σ = 4339008000. Its totient is φ = 1762940480.

The previous prime is 2945838613. The next prime is 2945838629. The reversal of 2945838621 is 1268385492.

It is an interprime number because it is at equal distance from previous prime (2945838613) and next prime (2945838629).

It is a cyclic number.

It is not a de Polignac number, because 2945838621 - 2³ = 2945838613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945838629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 878470 + ... + 881816.

It is an arithmetic number, because the mean of its divisors is an integer number (135594000).

Almost surely, 2^2945838621 is an apocalyptic number.

It is an amenable number.

2945838621 is a deficient number, since it is larger than the sum of its proper divisors (1393169379).

2945838621 is a wasteful number, since it uses less digits than its factorization.

2945838621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689.

The product of its digits is 829440, while the sum is 48.

The square root of 2945838621 is about 54275.5803377541. The cubic root of 2945838621 is about 1433.5174498598.

The spelling of 2945838621 in words is "two billion, nine hundred forty-five million, eight hundred thirty-eight thousand, six hundred twenty-one".