494915820 has 48 divisors (see below), whose sum is σ = 1583731968. Its totient is φ = 113123520.

The previous prime is 494915809. The next prime is 494915821. The reversal of 494915820 is 28519494.

494915820 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (494915821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588766 + ... + 589605.

It is an arithmetic number, because the mean of its divisors is an integer number (32994416).

Almost surely, 2^494915820 is an apocalyptic number.

It is an amenable number.

494915820 is an abundant number, since it is smaller than the sum of its proper divisors (1088816148).

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

494915820 is a wasteful number, since it uses less digits than its factorization.

494915820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178390 (or 1178388 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 494915820 is about 22246.7035760357. The cubic root of 494915820 is about 791.0011448842.

The spelling of 494915820 in words is "four hundred ninety-four million, nine hundred fifteen thousand, eight hundred twenty".