518191342 has 4 divisors (see below), whose sum is σ = 777287016. Its totient is φ = 259095670.

The previous prime is 518191337. The next prime is 518191367. The reversal of 518191342 is 243191815.

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

It is a junction number, because it is equal to n+sod(n) for n = 518191298 and 518191307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129547834 + ... + 129547837.

It is an arithmetic number, because the mean of its divisors is an integer number (194321754).

Almost surely, 2^518191342 is an apocalyptic number.

518191342 is a deficient number, since it is larger than the sum of its proper divisors (259095674).

518191342 is a wasteful number, since it uses less digits than its factorization.

518191342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259095673.

The product of its digits is 8640, while the sum is 34.

The square root of 518191342 is about 22763.8165077827. The cubic root of 518191342 is about 803.2117458967.

The spelling of 518191342 in words is "five hundred eighteen million, one hundred ninety-one thousand, three hundred forty-two".