1123998986 has 8 divisors (see below), whose sum is σ = 1839271104. Its totient is φ = 510908620.

The previous prime is 1123998971. The next prime is 1123999001. The reversal of 1123998986 is 6898993211.

It is an interprime number because it is at equal distance from previous prime (1123998971) and next prime (1123999001).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25545410 + ... + 25545453.

It is an arithmetic number, because the mean of its divisors is an integer number (229908888).

Almost surely, 2^1123998986 is an apocalyptic number.

1123998986 is a deficient number, since it is larger than the sum of its proper divisors (715272118).

1123998986 is a wasteful number, since it uses less digits than its factorization.

1123998986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51090876.

The product of its digits is 1679616, while the sum is 56.

The square root of 1123998986 is about 33526.0941059349. The cubic root of 1123998986 is about 1039.7333469474.

The spelling of 1123998986 in words is "one billion, one hundred twenty-three million, nine hundred ninety-eight thousand, nine hundred eighty-six".