1198493698381 has 24 divisors (see below), whose sum is σ = 1424643517440. Its totient is φ = 1004848300512.

The previous prime is 1198493698343. The next prime is 1198493698403. The reversal of 1198493698381 is 1838963948911.

It is not a de Polignac number, because 1198493698381 - 2¹⁷ = 1198493567309 is a prime.

It is a super-2 number, since 2×1198493698381² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1198493698381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198493698301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3903051 + ... + 4198903.

It is an arithmetic number, because the mean of its divisors is an integer number (59360146560).

Almost surely, 2^{1198493698381} is an apocalyptic number.

It is an amenable number.

1198493698381 is a deficient number, since it is larger than the sum of its proper divisors (226149819059).

1198493698381 is a wasteful number, since it uses less digits than its factorization.

1198493698381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297673 (or 297666 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 70.

The spelling of 1198493698381 in words is "one trillion, one hundred ninety-eight billion, four hundred ninety-three million, six hundred ninety-eight thousand, three hundred eighty-one".