188694642 has 16 divisors (see below), whose sum is σ = 378008352. Its totient is φ = 62795040.

The previous prime is 188694617. The next prime is 188694647. The reversal of 188694642 is 246496881.

188694642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 188694591 and 188694600.

It is not an unprimeable number, because it can be changed into a prime (188694647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21784 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (23625522).

Almost surely, 2^188694642 is an apocalyptic number.

188694642 is an abundant number, since it is smaller than the sum of its proper divisors (189313710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188694642 is a wasteful number, since it uses less digits than its factorization.

188694642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51593.

The product of its digits is 663552, while the sum is 48.

The square root of 188694642 is about 13736.6168323936. The cubic root of 188694642 is about 573.5701253579.

The spelling of 188694642 in words is "one hundred eighty-eight million, six hundred ninety-four thousand, six hundred forty-two".