518420477 has 8 divisors (see below), whose sum is σ = 527901696. Its totient is φ = 509023872.

The previous prime is 518420447. The next prime is 518420489. The reversal of 518420477 is 774024815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 518420477 - 2¹⁰ = 518419453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518420477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518420447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8723 + ... + 33360.

It is an arithmetic number, because the mean of its divisors is an integer number (65987712).

Almost surely, 2^518420477 is an apocalyptic number.

It is an amenable number.

518420477 is a deficient number, since it is larger than the sum of its proper divisors (9481219).

518420477 is a wasteful number, since it uses less digits than its factorization.

518420477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42307.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 518420477 is about 22768.8488290471. The cubic root of 518420477 is about 803.3301171033.

The spelling of 518420477 in words is "five hundred eighteen million, four hundred twenty thousand, four hundred seventy-seven".