118163493 has 12 divisors (see below), whose sum is σ = 195063648. Its totient is φ = 67521960.

The previous prime is 118163471. The next prime is 118163501. The reversal of 118163493 is 394361811.

118163493 is a `hidden beast` number, since 1 + 1 + 8 + 163 + 493 = 666.

It is not a de Polignac number, because 118163493 - 2¹⁰ = 118162469 is a prime.

It is a super-2 number, since 2×118163493² = 27925222155922098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118163093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 937743 + ... + 937868.

It is an arithmetic number, because the mean of its divisors is an integer number (16255304).

Almost surely, 2^118163493 is an apocalyptic number.

It is an amenable number.

118163493 is a deficient number, since it is larger than the sum of its proper divisors (76900155).

118163493 is a wasteful number, since it uses less digits than its factorization.

118163493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875624 (or 1875621 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 118163493 is about 10870.3032616390. The cubic root of 118163493 is about 490.7132373139.

The spelling of 118163493 in words is "one hundred eighteen million, one hundred sixty-three thousand, four hundred ninety-three".