945865020 has 48 divisors (see below), whose sum is σ = 2673191808. Its totient is φ = 249871680.

The previous prime is 945865013. The next prime is 945865021. The reversal of 945865020 is 20568549.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 945865020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945865021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67246 + ... + 80085.

It is an arithmetic number, because the mean of its divisors is an integer number (55691496).

Almost surely, 2^945865020 is an apocalyptic number.

It is an amenable number.

945865020 is an abundant number, since it is smaller than the sum of its proper divisors (1727326788).

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

945865020 is a wasteful number, since it uses less digits than its factorization.

945865020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147450 (or 147448 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 945865020 is about 30754.9186310093. The cubic root of 945865020 is about 981.6192237301.

The spelling of 945865020 in words is "nine hundred forty-five million, eight hundred sixty-five thousand, twenty".