189435436 has 12 divisors (see below), whose sum is σ = 331989840. Its totient is φ = 94581200.

The previous prime is 189435431. The next prime is 189435461. The reversal of 189435436 is 634534981.

It is a junction number, because it is equal to n+sod(n) for n = 189435392 and 189435401.

It is not an unprimeable number, because it can be changed into a prime (189435431) 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 3 ways as a sum of consecutive naturals, for example, 30976 + ... + 36583.

It is an arithmetic number, because the mean of its divisors is an integer number (27665820).

Almost surely, 2^189435436 is an apocalyptic number.

It is an amenable number.

189435436 is a deficient number, since it is larger than the sum of its proper divisors (142554404).

189435436 is a wasteful number, since it uses less digits than its factorization.

189435436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68264 (or 68262 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 189435436 is about 13763.5546280748. The cubic root of 189435436 is about 574.3197359094.

The spelling of 189435436 in words is "one hundred eighty-nine million, four hundred thirty-five thousand, four hundred thirty-six".