493178487 has 4 divisors (see below), whose sum is σ = 657571320. Its totient is φ = 328785656.

The previous prime is 493178471. The next prime is 493178507. The reversal of 493178487 is 784871394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 493178487 - 2⁴ = 493178471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493178407) 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, 82196412 + ... + 82196417.

It is an arithmetic number, because the mean of its divisors is an integer number (164392830).

Almost surely, 2^493178487 is an apocalyptic number.

493178487 is a deficient number, since it is larger than the sum of its proper divisors (164392833).

493178487 is a wasteful number, since it uses less digits than its factorization.

493178487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164392832.

The product of its digits is 1354752, while the sum is 51.

The square root of 493178487 is about 22207.6222725442. The cubic root of 493178487 is about 790.0744933226.

The spelling of 493178487 in words is "four hundred ninety-three million, one hundred seventy-eight thousand, four hundred eighty-seven".