118249691 has 6 divisors (see below), whose sum is σ = 137555820. Its totient is φ = 101356836.

The previous prime is 118249679. The next prime is 118249709. The reversal of 118249691 is 196942811.

It is not a de Polignac number, because 118249691 - 2⁶ = 118249627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118249661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1206581 + ... + 1206678.

It is an arithmetic number, because the mean of its divisors is an integer number (22925970).

Almost surely, 2^118249691 is an apocalyptic number.

118249691 is a deficient number, since it is larger than the sum of its proper divisors (19306129).

118249691 is an equidigital number, since it uses as much as digits as its factorization.

118249691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413273 (or 2413266 counting only the distinct ones).

The product of its digits is 31104, while the sum is 41.

The square root of 118249691 is about 10874.2673776214. The cubic root of 118249691 is about 490.8325302738.

The spelling of 118249691 in words is "one hundred eighteen million, two hundred forty-nine thousand, six hundred ninety-one".