113490805 has 16 divisors (see below), whose sum is σ = 139102704. Its totient is φ = 88865280.

The previous prime is 113490799. The next prime is 113490851. The reversal of 113490805 is 508094311.

It can be written as a sum of positive squares in 8 ways, for example, as 46267204 + 67223601 = 6802^2 + 8199^2 .

It is not a de Polignac number, because 113490805 - 2¹⁹ = 112966517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 70267 + ... + 71863.

It is an arithmetic number, because the mean of its divisors is an integer number (8693919).

It is the magic constant of a 610 × 610 magic square.

Almost surely, 2^113490805 is an apocalyptic number.

It is an amenable number.

113490805 is a deficient number, since it is larger than the sum of its proper divisors (25611899).

113490805 is a wasteful number, since it uses less digits than its factorization.

113490805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 113490805 is about 10653.2063248583. The cubic root of 113490805 is about 484.1577545660.

The spelling of 113490805 in words is "one hundred thirteen million, four hundred ninety thousand, eight hundred five".