188145734 has 16 divisors (see below), whose sum is σ = 323144736. Its totient is φ = 80481600.

The previous prime is 188145731. The next prime is 188145739. The reversal of 188145734 is 437541881.

It is a junction number, because it is equal to n+sod(n) for n = 188145691 and 188145700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188145731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4847 + ... + 19994.

It is an arithmetic number, because the mean of its divisors is an integer number (20196546).

Almost surely, 2^188145734 is an apocalyptic number.

188145734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

188145734 is a deficient number, since it is larger than the sum of its proper divisors (134999002).

188145734 is a wasteful number, since it uses less digits than its factorization.

188145734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25391.

The product of its digits is 107520, while the sum is 41.

The square root of 188145734 is about 13716.6225434689. The cubic root of 188145734 is about 573.0134181370.

The spelling of 188145734 in words is "one hundred eighty-eight million, one hundred forty-five thousand, seven hundred thirty-four".