5129726198 has 4 divisors (see below), whose sum is σ = 7694589300. Its totient is φ = 2564863098.

The previous prime is 5129726177. The next prime is 5129726207. The reversal of 5129726198 is 8916279215.

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

It is a Curzon number.

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, 1282431548 + ... + 1282431551.

It is an arithmetic number, because the mean of its divisors is an integer number (1923647325).

Almost surely, 2^5129726198 is an apocalyptic number.

5129726198 is a deficient number, since it is larger than the sum of its proper divisors (2564863102).

5129726198 is a wasteful number, since it uses less digits than its factorization.

5129726198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564863101.

The product of its digits is 544320, while the sum is 50.

The square root of 5129726198 is about 71622.1069084120. The cubic root of 5129726198 is about 1724.6384397161.

The spelling of 5129726198 in words is "five billion, one hundred twenty-nine million, seven hundred twenty-six thousand, one hundred ninety-eight".