945489636 has 144 divisors (see below), whose sum is σ = 2955598464. Its totient is φ = 248168448.

The previous prime is 945489607. The next prime is 945489637. The reversal of 945489636 is 636984549.

945489636 is a `hidden beast` number, since 9 + 4 + 548 + 96 + 3 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (945489637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 841371 + ... + 842493.

Almost surely, 2^945489636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 945489636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477799232).

945489636 is an abundant number, since it is smaller than the sum of its proper divisors (2010108828).

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

945489636 is a wasteful number, since it uses less digits than its factorization.

945489636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1405 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 945489636 is about 30748.8151966868. The cubic root of 945489636 is about 981.4893486422.

The spelling of 945489636 in words is "nine hundred forty-five million, four hundred eighty-nine thousand, six hundred thirty-six".