493610018640 has 40 divisors (see below), whose sum is σ = 1530191058528. Its totient is φ = 131629338240.

The previous prime is 493610018623. The next prime is 493610018689. The reversal of 493610018640 is 46810016394.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×493610018640³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 493610018592 and 493610018601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028353966 + ... + 1028354445.

Almost surely, 2^493610018640 is an apocalyptic number.

493610018640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

493610018640 is an abundant number, since it is smaller than the sum of its proper divisors (1036581039888).

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

493610018640 is a wasteful number, since it uses less digits than its factorization.

493610018640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056708427 (or 2056708421 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 493610018640 in words is "four hundred ninety-three billion, six hundred ten million, eighteen thousand, six hundred forty".