113161861 has 8 divisors (see below), whose sum is σ = 115736544. Its totient is φ = 110613360.

The previous prime is 113161819. The next prime is 113161871. The reversal of 113161861 is 168161311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113161861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113161801) 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, 2331 + ... + 15223.

It is an arithmetic number, because the mean of its divisors is an integer number (14467068).

Almost surely, 2^113161861 is an apocalyptic number.

It is an amenable number.

113161861 is a deficient number, since it is larger than the sum of its proper divisors (2574683).

113161861 is a wasteful number, since it uses less digits than its factorization.

113161861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13091.

The product of its digits is 864, while the sum is 28.

The square root of 113161861 is about 10637.7563893896. The cubic root of 113161861 is about 483.6895377654.

The spelling of 113161861 in words is "one hundred thirteen million, one hundred sixty-one thousand, eight hundred sixty-one".