189783553394 has 8 divisors (see below), whose sum is σ = 286488549228. Its totient is φ = 94287370320.

The previous prime is 189783553363. The next prime is 189783553409. The reversal of 189783553394 is 493355387981.

It can be written as a sum of positive squares in 2 ways, for example, as 181487076169 + 8296477225 = 426013^2 + 91085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 189783553394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302202797 + ... + 302203424.

Almost surely, 2^189783553394 is an apocalyptic number.

189783553394 is a deficient number, since it is larger than the sum of its proper divisors (96704995834).

189783553394 is a wasteful number, since it uses less digits than its factorization.

189783553394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604406380.

The product of its digits is 97977600, while the sum is 65.

The spelling of 189783553394 in words is "one hundred eighty-nine billion, seven hundred eighty-three million, five hundred fifty-three thousand, three hundred ninety-four".