1117908738 has 24 divisors (see below), whose sum is σ = 2549617200. Its totient is φ = 353023704.

The previous prime is 1117908731. The next prime is 1117908739. The reversal of 1117908738 is 8378097111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1117908693 and 1117908702.

It is not an unprimeable number, because it can be changed into a prime (1117908731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1634028 + ... + 1634711.

It is an arithmetic number, because the mean of its divisors is an integer number (106234050).

Almost surely, 2^1117908738 is an apocalyptic number.

1117908738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1117908738 is an abundant number, since it is smaller than the sum of its proper divisors (1431708462).

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

1117908738 is a wasteful number, since it uses less digits than its factorization.

1117908738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268766 (or 3268763 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The square root of 1117908738 is about 33435.1422608010. The cubic root of 1117908738 is about 1037.8520566100.

The spelling of 1117908738 in words is "one billion, one hundred seventeen million, nine hundred eight thousand, seven hundred thirty-eight".