19498349508 has 24 divisors (see below), whose sum is σ = 49632162720. Its totient is φ = 5908590720.

The previous prime is 19498349501. The next prime is 19498349543. The reversal of 19498349508 is 80594389491.

It is a super-2 number, since 2×19498349508² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19498349501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73857253 + ... + 73857516.

It is an arithmetic number, because the mean of its divisors is an integer number (2068006780).

Almost surely, 2^19498349508 is an apocalyptic number.

It is an amenable number.

19498349508 is an abundant number, since it is smaller than the sum of its proper divisors (30133813212).

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

19498349508 is a wasteful number, since it uses less digits than its factorization.

19498349508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147714787 (or 147714785 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 19498349508 in words is "nineteen billion, four hundred ninety-eight million, three hundred forty-nine thousand, five hundred eight".