1113798642 has 64 divisors (see below), whose sum is σ = 2554066944. Its totient is φ = 320725440.

The previous prime is 1113798619. The next prime is 1113798671. The reversal of 1113798642 is 2468973111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1113798594 and 1113798603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99703 + ... + 110309.

It is an arithmetic number, because the mean of its divisors is an integer number (39907296).

Almost surely, 2^1113798642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113798642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277033472).

1113798642 is an abundant number, since it is smaller than the sum of its proper divisors (1440268302).

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

1113798642 is a wasteful number, since it uses less digits than its factorization.

1113798642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703.

The product of its digits is 72576, while the sum is 42.

The square root of 1113798642 is about 33373.6219490783. The cubic root of 1113798642 is about 1036.5785745988.

It can be divided in two parts, 111379 and 8642, that added together give a palindrome (120021).

The spelling of 1113798642 in words is "one billion, one hundred thirteen million, seven hundred ninety-eight thousand, six hundred forty-two".