1113858081 has 32 divisors (see below), whose sum is σ = 1905370880. Its totient is φ = 629918208.

The previous prime is 1113858079. The next prime is 1113858113. The reversal of 1113858081 is 1808583111.

It is a happy number.

It is not a de Polignac number, because 1113858081 - 2¹ = 1113858079 is a prime.

It is a super-2 number, since 2×1113858081² = 2481359649218005122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1113858001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12046 + ... + 48711.

It is an arithmetic number, because the mean of its divisors is an integer number (59542840).

Almost surely, 2^1113858081 is an apocalyptic number.

It is an amenable number.

1113858081 is a deficient number, since it is larger than the sum of its proper divisors (791512799).

1113858081 is an equidigital number, since it uses as much as digits as its factorization.

1113858081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60870 (or 60864 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 36.

The square root of 1113858081 is about 33374.5124458770. The cubic root of 1113858081 is about 1036.5970136283.

The spelling of 1113858081 in words is "one billion, one hundred thirteen million, eight hundred fifty-eight thousand, eighty-one".