198049493719 has 64 divisors (see below), whose sum is σ = 261990236160. Its totient is φ = 145141920000.

The previous prime is 198049493693. The next prime is 198049493767. The reversal of 198049493719 is 917394940891.

It is not a de Polignac number, because 198049493719 - 2⁵ = 198049493687 is a prime.

It is a super-2 number, since 2×198049493719² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198049496719) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51426144 + ... + 51429994.

It is an arithmetic number, because the mean of its divisors is an integer number (4093597440).

Almost surely, 2^198049493719 is an apocalyptic number.

198049493719 is a deficient number, since it is larger than the sum of its proper divisors (63940742441).

198049493719 is a wasteful number, since it uses less digits than its factorization.

198049493719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 17635968, while the sum is 64.

The spelling of 198049493719 in words is "one hundred ninety-eight billion, forty-nine million, four hundred ninety-three thousand, seven hundred nineteen".