499813650 has 144 divisors (see below), whose sum is σ = 1550847168. Its totient is φ = 113040000.

The previous prime is 499813627. The next prime is 499813663. The reversal of 499813650 is 56318994.

It is a happy number.

499813650 is a `hidden beast` number, since 499 + 81 + 36 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 499813596 and 499813605.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 317365 + ... + 318935.

It is an arithmetic number, because the mean of its divisors is an integer number (10769772).

Almost surely, 2^499813650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499813650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775423584).

499813650 is an abundant number, since it is smaller than the sum of its proper divisors (1051033518).

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

499813650 is a wasteful number, since it uses less digits than its factorization.

499813650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 499813650 is about 22356.5124739974. The cubic root of 499813650 is about 793.6019096696.

The spelling of 499813650 in words is "four hundred ninety-nine million, eight hundred thirteen thousand, six hundred fifty".