188245245 has 16 divisors (see below), whose sum is σ = 304823232. Its totient is φ = 99187200.

The previous prime is 188245219. The next prime is 188245247. The reversal of 188245245 is 542542881.

It is a happy number.

It is not a de Polignac number, because 188245245 - 2⁶ = 188245181 is a prime.

It is a super-2 number, since 2×188245245² = 70872544530220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188245247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74356 + ... + 76845.

It is an arithmetic number, because the mean of its divisors is an integer number (19051452).

Almost surely, 2^188245245 is an apocalyptic number.

188245245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

188245245 is a deficient number, since it is larger than the sum of its proper divisors (116577987).

188245245 is a wasteful number, since it uses less digits than its factorization.

188245245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151292.

The product of its digits is 102400, while the sum is 39.

The square root of 188245245 is about 13720.2494510851. The cubic root of 188245245 is about 573.1144233296.

The spelling of 188245245 in words is "one hundred eighty-eight million, two hundred forty-five thousand, two hundred forty-five".