618650652 has 12 divisors (see below), whose sum is σ = 1443518216. Its totient is φ = 206216880.

The previous prime is 618650639. The next prime is 618650687. The reversal of 618650652 is 256056816.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 618650652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25777099 + ... + 25777122.

Almost surely, 2^618650652 is an apocalyptic number.

It is an amenable number.

618650652 is an abundant number, since it is smaller than the sum of its proper divisors (824867564).

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

618650652 is a wasteful number, since it uses less digits than its factorization.

618650652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51554228 (or 51554226 counting only the distinct ones).

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

The square root of 618650652 is about 24872.6888775621. The cubic root of 618650652 is about 852.0828513845.

The spelling of 618650652 in words is "six hundred eighteen million, six hundred fifty thousand, six hundred fifty-two".