118453381 has 4 divisors (see below), whose sum is σ = 123603552. Its totient is φ = 113303212.

The previous prime is 118453337. The next prime is 118453411. The reversal of 118453381 is 183354811.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 183354811 = 167 ⋅1097933.

It is a cyclic number.

It is not a de Polignac number, because 118453381 - 2¹⁹ = 117929093 is a prime.

It is a super-2 number, since 2×118453381² = 28062406940662322, 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 (118453481) 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, 2575051 + ... + 2575096.

It is an arithmetic number, because the mean of its divisors is an integer number (30900888).

Almost surely, 2^118453381 is an apocalyptic number.

It is an amenable number.

118453381 is a deficient number, since it is larger than the sum of its proper divisors (5150171).

118453381 is an equidigital number, since it uses as much as digits as its factorization.

118453381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150170.

The product of its digits is 11520, while the sum is 34.

The square root of 118453381 is about 10883.6290363095. The cubic root of 118453381 is about 491.1141950767.

The spelling of 118453381 in words is "one hundred eighteen million, four hundred fifty-three thousand, three hundred eighty-one".