534621618 has 12 divisors (see below), whose sum is σ = 1158346878. Its totient is φ = 178207200.

The previous prime is 534621599. The next prime is 534621649. The reversal of 534621618 is 816126435.

It is a happy number.

534621618 is a `hidden beast` number, since 5 + 34 + 6 + 2 + 1 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 432348849 + 102272769 = 20793^2 + 10113^2 .

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, 14850583 + ... + 14850618.

Almost surely, 2^534621618 is an apocalyptic number.

534621618 is an abundant number, since it is smaller than the sum of its proper divisors (623725260).

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

534621618 is a wasteful number, since it uses less digits than its factorization.

534621618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29701209 (or 29701206 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 534621618 is about 23121.8861254873. The cubic root of 534621618 is about 811.6127083236.

The spelling of 534621618 in words is "five hundred thirty-four million, six hundred twenty-one thousand, six hundred eighteen".