1113111998 has 32 divisors (see below), whose sum is σ = 1799677440. Its totient is φ = 514684800.

The previous prime is 1113111997. The next prime is 1113112001. The reversal of 1113111998 is 8991113111.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113111997) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1058573 + ... + 1059623.

It is an arithmetic number, because the mean of its divisors is an integer number (56239920).

Almost surely, 2^1113111998 is an apocalyptic number.

1113111998 is a deficient number, since it is larger than the sum of its proper divisors (686565442).

1113111998 is a wasteful number, since it uses less digits than its factorization.

1113111998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712.

The product of its digits is 1944, while the sum is 35.

The square root of 1113111998 is about 33363.3331368435. Note that the first 3 decimals coincide. The cubic root of 1113111998 is about 1036.3655179037.

The spelling of 1113111998 in words is "one billion, one hundred thirteen million, one hundred eleven thousand, nine hundred ninety-eight".