9420145866 has 12 divisors (see below), whose sum is σ = 20410316082. Its totient is φ = 3140048616.

The previous prime is 9420145829. The next prime is 9420145901. The reversal of 9420145866 is 6685410249.

9420145866 is a `hidden beast` number, since 9 + 420 + 145 + 86 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7766015625 + 1654130241 = 88125^2 + 40671^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 261670701 + ... + 261670736.

Almost surely, 2^9420145866 is an apocalyptic number.

9420145866 is an abundant number, since it is smaller than the sum of its proper divisors (10990170216).

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

9420145866 is a wasteful number, since it uses less digits than its factorization.

9420145866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523341445 (or 523341442 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 9420145866 is about 97057.4359129686. The cubic root of 9420145866 is about 2111.9609112191.

The spelling of 9420145866 in words is "nine billion, four hundred twenty million, one hundred forty-five thousand, eight hundred sixty-six".