518193690 has 64 divisors (see below), whose sum is σ = 1430956800. Its totient is φ = 117642240.

The previous prime is 518193679. The next prime is 518193727. The reversal of 518193690 is 96391815.

It is a super-2 number, since 2×518193690² = 537049400711632200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23010 + ... + 39570.

It is an arithmetic number, because the mean of its divisors is an integer number (22358700).

Almost surely, 2^518193690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518193690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715478400).

518193690 is an abundant number, since it is smaller than the sum of its proper divisors (912763110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518193690 is a wasteful number, since it uses less digits than its factorization.

518193690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16727.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 518193690 is about 22763.8680807986. The cubic root of 518193690 is about 803.2129590512.

The spelling of 518193690 in words is "five hundred eighteen million, one hundred ninety-three thousand, six hundred ninety".