113542809 has 8 divisors (see below), whose sum is σ = 152546592. Its totient is φ = 75117120.

The previous prime is 113542787. The next prime is 113542811. The reversal of 113542809 is 908245311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113542809 - 2¹¹ = 113540761 is a prime.

It is a super-2 number, since 2×113542809² = 25783938951220962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113542809.

It is not an unprimeable number, because it can be changed into a prime (113542889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144064 + ... + 144849.

It is an arithmetic number, because the mean of its divisors is an integer number (19068324).

Almost surely, 2^113542809 is an apocalyptic number.

It is an amenable number.

113542809 is a deficient number, since it is larger than the sum of its proper divisors (39003783).

113542809 is a wasteful number, since it uses less digits than its factorization.

113542809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289047.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 113542809 is about 10655.6468128406. The cubic root of 113542809 is about 484.2316938751.

The spelling of 113542809 in words is "one hundred thirteen million, five hundred forty-two thousand, eight hundred nine".