494818380 has 144 divisors (see below), whose sum is σ = 1720992000. Its totient is φ = 112731264.

The previous prime is 494818369. The next prime is 494818399. The reversal of 494818380 is 83818494.

494818380 is a `hidden beast` number, since 494 + 8 + 1 + 83 + 80 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 628347 + ... + 629133.

Almost surely, 2^494818380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494818380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860496000).

494818380 is an abundant number, since it is smaller than the sum of its proper divisors (1226173620).

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

494818380 is a wasteful number, since it uses less digits than its factorization.

494818380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 494818380 is about 22244.5134808564. The cubic root of 494818380 is about 790.9492301900.

The spelling of 494818380 in words is "four hundred ninety-four million, eight hundred eighteen thousand, three hundred eighty".