11195742438 has 48 divisors (see below), whose sum is σ = 25545901680. Its totient is φ = 3533870592.

The previous prime is 11195742401. The next prime is 11195742443. The reversal of 11195742438 is 83424759111.

11195742438 is a `hidden beast` number, since 1 + 1 + 195 + 7 + 424 + 38 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11195742393 and 11195742402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 894270 + ... + 906702.

It is an arithmetic number, because the mean of its divisors is an integer number (532206285).

Almost surely, 2^11195742438 is an apocalyptic number.

11195742438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11195742438 is an abundant number, since it is smaller than the sum of its proper divisors (14350159242).

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

11195742438 is a wasteful number, since it uses less digits than its factorization.

11195742438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15093 (or 15090 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 11195742438 in words is "eleven billion, one hundred ninety-five million, seven hundred forty-two thousand, four hundred thirty-eight".