493131640 has 16 divisors (see below), whose sum is σ = 1109546280. Its totient is φ = 197252640.

The previous prime is 493131629. The next prime is 493131647. The reversal of 493131640 is 46131394.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493131647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6164106 + ... + 6164185.

Almost surely, 2^493131640 is an apocalyptic number.

493131640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

493131640 is an abundant number, since it is smaller than the sum of its proper divisors (616414640).

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

493131640 is a wasteful number, since it uses less digits than its factorization.

493131640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12328302 (or 12328298 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 493131640 is about 22206.5674970266. The cubic root of 493131640 is about 790.0494761515.

The spelling of 493131640 in words is "four hundred ninety-three million, one hundred thirty-one thousand, six hundred forty".