118281492 has 192 divisors, whose sum is σ = 372736000. Its totient is φ = 32387040.

The previous prime is 118281487. The next prime is 118281497. The reversal of 118281492 is 294182811.

It is a happy number.

118281492 is a `hidden beast` number, since 11 + 82 + 81 + 492 = 666.

It is an interprime number because it is at equal distance from previous prime (118281487) and next prime (118281497).

It is a super-2 number, since 2×118281492² = 27981022699492128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118281497) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1148313 + ... + 1148415.

Almost surely, 2^118281492 is an apocalyptic number.

118281492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118281492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186368000).

118281492 is an abundant number, since it is smaller than the sum of its proper divisors (254454508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118281492 is a wasteful number, since it uses less digits than its factorization.

118281492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 146 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 118281492 is about 10875.7294927743. The cubic root of 118281492 is about 490.8765263472.

The spelling of 118281492 in words is "one hundred eighteen million, two hundred eighty-one thousand, four hundred ninety-two".