113649619 has 4 divisors (see below), whose sum is σ = 116067744. Its totient is φ = 111231496.

The previous prime is 113649617. The next prime is 113649623. The reversal of 113649619 is 916946311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916946311 = 2689 ⋅340999.

It is a cyclic number.

It is not a de Polignac number, because 113649619 - 2¹ = 113649617 is a prime.

It is a super-2 number, since 2×113649619² = 25832471797690322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (113649617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208992 + ... + 1209085.

It is an arithmetic number, because the mean of its divisors is an integer number (29016936).

Almost surely, 2^113649619 is an apocalyptic number.

113649619 is a deficient number, since it is larger than the sum of its proper divisors (2418125).

113649619 is an equidigital number, since it uses as much as digits as its factorization.

113649619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418124.

The product of its digits is 34992, while the sum is 40.

The square root of 113649619 is about 10660.6575313158. The cubic root of 113649619 is about 484.3834856037.

The spelling of 113649619 in words is "one hundred thirteen million, six hundred forty-nine thousand, six hundred nineteen".