5194318144 has 14 divisors (see below), whose sum is σ = 10307475194. Its totient is φ = 2597159040.

The previous prime is 5194318079. The next prime is 5194318187. The reversal of 5194318144 is 4418134915.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4639244544 + 555073600 = 68112^2 + 23560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5194318097 and 5194318106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40580547 + ... + 40580674.

Almost surely, 2^5194318144 is an apocalyptic number.

It is an amenable number.

5194318144 is a deficient number, since it is larger than the sum of its proper divisors (5113157050).

5194318144 is an equidigital number, since it uses as much as digits as its factorization.

5194318144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81161233 (or 81161223 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 5194318144 is about 72071.6181586067. The cubic root of 5194318144 is about 1731.8469748370.

The spelling of 5194318144 in words is "five billion, one hundred ninety-four million, three hundred eighteen thousand, one hundred forty-four".