8019129698 has 8 divisors (see below), whose sum is σ = 12032771292. Its totient is φ = 4008205936.

The previous prime is 8019129691. The next prime is 8019129733. The reversal of 8019129698 is 8969219108.

It can be written as a sum of positive squares in 2 ways, for example, as 6805095049 + 1214034649 = 82493^2 + 34843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8019129698² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8019129691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672065 + ... + 683892.

Almost surely, 2^8019129698 is an apocalyptic number.

8019129698 is a deficient number, since it is larger than the sum of its proper divisors (4013641594).

8019129698 is a wasteful number, since it uses less digits than its factorization.

8019129698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358916.

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 8019129698 is about 89549.5935110819. The cubic root of 8019129698 is about 2001.5928725417.

The spelling of 8019129698 in words is "eight billion, nineteen million, one hundred twenty-nine thousand, six hundred ninety-eight".