118543261 has 8 divisors (see below), whose sum is σ = 132122880. Its totient is φ = 105697728.

The previous prime is 118543247. The next prime is 118543289. The reversal of 118543261 is 162345811.

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

It is a cyclic number.

It is not a de Polignac number, because 118543261 - 2¹⁹ = 118018973 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 (118543211) 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, 183181 + ... + 183826.

It is an arithmetic number, because the mean of its divisors is an integer number (16515360).

Almost surely, 2^118543261 is an apocalyptic number.

It is an amenable number.

118543261 is a deficient number, since it is larger than the sum of its proper divisors (13579619).

118543261 is a wasteful number, since it uses less digits than its factorization.

118543261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367043.

The product of its digits is 5760, while the sum is 31.

The square root of 118543261 is about 10887.7573907577. The cubic root of 118543261 is about 491.2383794708.

The spelling of 118543261 in words is "one hundred eighteen million, five hundred forty-three thousand, two hundred sixty-one".