118199541 has 4 divisors (see below), whose sum is σ = 157599392. Its totient is φ = 78799692.

The previous prime is 118199537. The next prime is 118199573. The reversal of 118199541 is 145991811.

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.

It is not a de Polignac number, because 118199541 - 2² = 118199537 is a prime.

It is a super-2 number, since 2×118199541² = 27942262985221362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118199541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118199141) 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, 19699921 + ... + 19699926.

It is an arithmetic number, because the mean of its divisors is an integer number (39399848).

Almost surely, 2^118199541 is an apocalyptic number.

It is an amenable number.

118199541 is a deficient number, since it is larger than the sum of its proper divisors (39399851).

118199541 is an equidigital number, since it uses as much as digits as its factorization.

118199541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39399850.

The product of its digits is 12960, while the sum is 39.

The square root of 118199541 is about 10871.9612306152. The cubic root of 118199541 is about 490.7631326801.

The spelling of 118199541 in words is "one hundred eighteen million, one hundred ninety-nine thousand, five hundred forty-one".