118283647 has 4 divisors (see below), whose sum is σ = 121168656. Its totient is φ = 115398640.

The previous prime is 118283629. The next prime is 118283653. The reversal of 118283647 is 746382811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746382811 = 4099 ⋅182089.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118283647 is a prime.

It is a super-2 number, since 2×118283647² = 27982042295241218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118283617) 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, 1442443 + ... + 1442524.

It is an arithmetic number, because the mean of its divisors is an integer number (30292164).

Almost surely, 2^118283647 is an apocalyptic number.

118283647 is a deficient number, since it is larger than the sum of its proper divisors (2885009).

118283647 is an equidigital number, since it uses as much as digits as its factorization.

118283647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885008.

The product of its digits is 64512, while the sum is 40.

The square root of 118283647 is about 10875.8285661369. The cubic root of 118283647 is about 490.8795074630.

The spelling of 118283647 in words is "one hundred eighteen million, two hundred eighty-three thousand, six hundred forty-seven".