188083493 has 4 divisors (see below), whose sum is σ = 202551468. Its totient is φ = 173615520.

The previous prime is 188083487. The next prime is 188083499. The reversal of 188083493 is 394380881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394380881 = 769 ⋅512849.

It is an interprime number because it is at equal distance from previous prime (188083487) and next prime (188083499).

It can be written as a sum of positive squares in 2 ways, for example, as 94342369 + 93741124 = 9713^2 + 9682^2 .

It is not a de Polignac number, because 188083493 - 2¹⁴ = 188067109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188083499) 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, 7233968 + ... + 7233993.

It is an arithmetic number, because the mean of its divisors is an integer number (50637867).

Almost surely, 2^188083493 is an apocalyptic number.

188083493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

188083493 is a deficient number, since it is larger than the sum of its proper divisors (14467975).

188083493 is a wasteful number, since it uses less digits than its factorization.

188083493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14467974.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 188083493 is about 13714.3535392668. The cubic root of 188083493 is about 572.9502244610.

The spelling of 188083493 in words is "one hundred eighty-eight million, eighty-three thousand, four hundred ninety-three".