497118187 has 4 divisors (see below), whose sum is σ = 498966480. Its totient is φ = 495269896.

The previous prime is 497118179. The next prime is 497118197. The reversal of 497118187 is 781811794.

It is a happy number.

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 497118187 - 2³ = 497118179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497118137) 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, 923743 + ... + 924280.

It is an arithmetic number, because the mean of its divisors is an integer number (124741620).

Almost surely, 2^497118187 is an apocalyptic number.

497118187 is a deficient number, since it is larger than the sum of its proper divisors (1848293).

497118187 is a wasteful number, since it uses less digits than its factorization.

497118187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848292.

The product of its digits is 112896, while the sum is 46.

The square root of 497118187 is about 22296.1473577836. The cubic root of 497118187 is about 792.1727226555.

The spelling of 497118187 in words is "four hundred ninety-seven million, one hundred eighteen thousand, one hundred eighty-seven".