113744781 has 6 divisors (see below), whose sum is σ = 164298030. Its totient is φ = 75829848.

The previous prime is 113744749. The next prime is 113744789. The reversal of 113744781 is 187447311.

113744781 is a `hidden beast` number, since 1 + 137 + 447 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 98604900 + 15139881 = 9930^2 + 3891^2 .

It is not a de Polignac number, because 113744781 - 2⁵ = 113744749 is a prime.

It is a super-2 number, since 2×113744781² = 25875750409475922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113744789) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6319146 + ... + 6319163.

It is an arithmetic number, because the mean of its divisors is an integer number (27383005).

Almost surely, 2^113744781 is an apocalyptic number.

It is an amenable number.

113744781 is a deficient number, since it is larger than the sum of its proper divisors (50553249).

113744781 is a wasteful number, since it uses less digits than its factorization.

113744781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12638315 (or 12638312 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 113744781 is about 10665.1198305504. The cubic root of 113744781 is about 484.5186438269.

The spelling of 113744781 in words is "one hundred thirteen million, seven hundred forty-four thousand, seven hundred eighty-one".