113187489 has 16 divisors (see below), whose sum is σ = 155224512. Its totient is φ = 73331648.

The previous prime is 113187461. The next prime is 113187491. The reversal of 113187489 is 984781311.

It is not a de Polignac number, because 113187489 - 2⁹ = 113186977 is a prime.

It is a super-2 number, since 2×113187489² = 25622815332250242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 113187489.

It is not an unprimeable number, because it can be changed into a prime (113187289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13687 + ... + 20339.

It is an arithmetic number, because the mean of its divisors is an integer number (9701532).

Almost surely, 2^113187489 is an apocalyptic number.

It is an amenable number.

113187489 is a deficient number, since it is larger than the sum of its proper divisors (42037023).

113187489 is a wasteful number, since it uses less digits than its factorization.

113187489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816.

The product of its digits is 48384, while the sum is 42.

The square root of 113187489 is about 10638.9608985088. The cubic root of 113187489 is about 483.7260490649.

The spelling of 113187489 in words is "one hundred thirteen million, one hundred eighty-seven thousand, four hundred eighty-nine".