499813651 has 24 divisors (see below), whose sum is σ = 560203776. Its totient is φ = 445176960.

The previous prime is 499813627. The next prime is 499813663. The reversal of 499813651 is 156318994.

It is not a de Polignac number, because 499813651 - 2⁵ = 499813619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499813151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420480 + ... + 421666.

It is an arithmetic number, because the mean of its divisors is an integer number (23341824).

Almost surely, 2^499813651 is an apocalyptic number.

499813651 is the 14140-th centered pentagonal number.

499813651 is a deficient number, since it is larger than the sum of its proper divisors (60390125).

499813651 is a wasteful number, since it uses less digits than its factorization.

499813651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1282 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 499813651 is about 22356.5124963622. The cubic root of 499813651 is about 793.6019101989.

The spelling of 499813651 in words is "four hundred ninety-nine million, eight hundred thirteen thousand, six hundred fifty-one".