20198113019 has 16 divisors (see below), whose sum is σ = 23298900480. Its totient is φ = 17151308160.

The previous prime is 20198113007. The next prime is 20198113031. The reversal of 20198113019 is 91031189102.

It is an interprime number because it is at equal distance from previous prime (20198113007) and next prime (20198113031).

It is a de Polignac number, because none of the positive numbers 2^k-20198113019 is a prime.

It is a super-2 number, since 2×20198113019² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20198113019.

It is not an unprimeable number, because it can be changed into a prime (20198110019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2139692 + ... + 2149110.

It is an arithmetic number, because the mean of its divisors is an integer number (1456181280).

Almost surely, 2^20198113019 is an apocalyptic number.

20198113019 is a deficient number, since it is larger than the sum of its proper divisors (3100787461).

20198113019 is a wasteful number, since it uses less digits than its factorization.

20198113019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12250.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 20198113019 in words is "twenty billion, one hundred ninety-eight million, one hundred thirteen thousand, nineteen".