1121738718 has 16 divisors (see below), whose sum is σ = 2244517776. Its totient is φ = 373739520.

The previous prime is 1121738677. The next prime is 1121738719. The reversal of 1121738718 is 8178371211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121738719) 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 7 ways as a sum of consecutive naturals, for example, 28963 + ... + 55518.

It is an arithmetic number, because the mean of its divisors is an integer number (140282361).

Almost surely, 2^1121738718 is an apocalyptic number.

1121738718 is an abundant number, since it is smaller than the sum of its proper divisors (1122779058).

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

1121738718 is a wasteful number, since it uses less digits than its factorization.

1121738718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86699.

The product of its digits is 18816, while the sum is 39.

The square root of 1121738718 is about 33492.3680560214. The cubic root of 1121738718 is about 1039.0359403148.

The spelling of 1121738718 in words is "one billion, one hundred twenty-one million, seven hundred thirty-eight thousand, seven hundred eighteen".