1118257823 has 8 divisors (see below), whose sum is σ = 1160380416. Its totient is φ = 1076513400.

The previous prime is 1118257813. The next prime is 1118257843. The reversal of 1118257823 is 3287528111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1118257823 - 2¹⁸ = 1117995679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118257813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88511 + ... + 100352.

It is an arithmetic number, because the mean of its divisors is an integer number (145047552).

Almost surely, 2^1118257823 is an apocalyptic number.

1118257823 is a deficient number, since it is larger than the sum of its proper divisors (42122593).

1118257823 is a wasteful number, since it uses less digits than its factorization.

1118257823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189085.

The product of its digits is 26880, while the sum is 38.

The square root of 1118257823 is about 33440.3621840434. The cubic root of 1118257823 is about 1037.9600740382.

The spelling of 1118257823 in words is "one billion, one hundred eighteen million, two hundred fifty-seven thousand, eight hundred twenty-three".