188434147 has 12 divisors (see below), whose sum is σ = 216130320. Its totient is φ = 163853360.

The previous prime is 188434109. The next prime is 188434157. The reversal of 188434147 is 741434881.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-188434147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188434157) 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, 31072 + ... + 36637.

It is an arithmetic number, because the mean of its divisors is an integer number (18010860).

Almost surely, 2^188434147 is an apocalyptic number.

188434147 is a deficient number, since it is larger than the sum of its proper divisors (27696173).

188434147 is a wasteful number, since it uses less digits than its factorization.

188434147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67754 (or 67743 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 188434147 is about 13727.1317834426. The cubic root of 188434147 is about 573.3060638809.

The spelling of 188434147 in words is "one hundred eighty-eight million, four hundred thirty-four thousand, one hundred forty-seven".