1138198193 has 16 divisors (see below), whose sum is σ = 1252435200. Its totient is φ = 1025790480.

The previous prime is 1138198169. The next prime is 1138198199. The reversal of 1138198193 is 3918918311.

It is not a de Polignac number, because 1138198193 - 2⁶ = 1138198129 is a prime.

It is a super-3 number, since 3×1138198193³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138198199) 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, 1324598 + ... + 1325456.

It is an arithmetic number, because the mean of its divisors is an integer number (78277200).

Almost surely, 2^1138198193 is an apocalyptic number.

It is an amenable number.

1138198193 is a deficient number, since it is larger than the sum of its proper divisors (114237007).

1138198193 is a wasteful number, since it uses less digits than its factorization.

1138198193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772.

The product of its digits is 46656, while the sum is 44.

The square root of 1138198193 is about 33737.1930219454. The cubic root of 1138198193 is about 1044.0932720673.

The spelling of 1138198193 in words is "one billion, one hundred thirty-eight million, one hundred ninety-eight thousand, one hundred ninety-three".