118591749 has 48 divisors (see below), whose sum is σ = 193852800. Its totient is φ = 71643528.

The previous prime is 118591741. The next prime is 118591757. The reversal of 118591749 is 947195811.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

118591749 is a `hidden beast` number, since 1 + 18 + 591 + 7 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (118591741) and next prime (118591757).

It is not a de Polignac number, because 118591749 - 2³ = 118591741 is a prime.

Its product of digits (90720) is a multiple of the sum of its prime divisors (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118591741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5156152 + ... + 5156174.

It is an arithmetic number, because the mean of its divisors is an integer number (4038600).

Almost surely, 2^118591749 is an apocalyptic number.

118591749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

118591749 is a deficient number, since it is larger than the sum of its proper divisors (75261051).

118591749 is an frugal number, since it uses more digits than its factorization.

118591749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 45 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 118591749 is about 10889.9838842856. The cubic root of 118591749 is about 491.3053477642.

The spelling of 118591749 in words is "one hundred eighteen million, five hundred ninety-one thousand, seven hundred forty-nine".