493181620 has 96 divisors (see below), whose sum is σ = 1106493696. Its totient is φ = 184396800.

The previous prime is 493181593. The next prime is 493181629. The reversal of 493181620 is 26181394.

493181620 = 5727² + 5728² + ... + 5741².

It is a super-2 number, since 2×493181620² = 486456220611648800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493181629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2503362 + ... + 2503558.

It is an arithmetic number, because the mean of its divisors is an integer number (11525976).

Almost surely, 2^493181620 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 493181620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553246848).

493181620 is an abundant number, since it is smaller than the sum of its proper divisors (613312076).

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

493181620 is a wasteful number, since it uses less digits than its factorization.

493181620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 493181620 is about 22207.6928112760. The cubic root of 493181620 is about 790.0761663464.

The spelling of 493181620 in words is "four hundred ninety-three million, one hundred eighty-one thousand, six hundred twenty".