117118541 has 4 divisors (see below), whose sum is σ = 119842272. Its totient is φ = 114394812.

The previous prime is 117118531. The next prime is 117118543. The reversal of 117118541 is 145811711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145811711 = 1559 ⋅93529.

It is a cyclic number.

It is not a de Polignac number, because 117118541 - 2¹⁴ = 117102157 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 (117118543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1361801 + ... + 1361886.

It is an arithmetic number, because the mean of its divisors is an integer number (29960568).

Almost surely, 2^117118541 is an apocalyptic number.

It is an amenable number.

117118541 is a deficient number, since it is larger than the sum of its proper divisors (2723731).

117118541 is an equidigital number, since it uses as much as digits as its factorization.

117118541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723730.

The product of its digits is 1120, while the sum is 29.

The square root of 117118541 is about 10822.1319988254. The cubic root of 117118541 is about 489.2624486292.

The spelling of 117118541 in words is "one hundred seventeen million, one hundred eighteen thousand, five hundred forty-one".