5131918 has 16 divisors (see below), whose sum is σ = 8495280. Its totient is φ = 2305600.

The previous prime is 5131897. The next prime is 5131961. The reversal of 5131918 is 8191315.

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, 648 + ... + 3268.

It is an arithmetic number, because the mean of its divisors is an integer number (530955).

Almost surely, 2^5131918 is an apocalyptic number.

5131918 is a deficient number, since it is larger than the sum of its proper divisors (3363362).

5131918 is a wasteful number, since it uses less digits than its factorization.

5131918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its digits is 1080, while the sum is 28.

The square root of 5131918 is about 2265.3736998562. The cubic root of 5131918 is about 172.4884036173.

The spelling of 5131918 in words is "five million, one hundred thirty-one thousand, nine hundred eighteen".