189956844074 has 8 divisors (see below), whose sum is σ = 284940211008. Its totient is φ = 94976773740.

The previous prime is 189956844071. The next prime is 189956844079. The reversal of 189956844074 is 470448659981.

189956844074 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×189956844074² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189956844074.

It is not an unprimeable number, because it can be changed into a prime (189956844071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674672 + ... + 913835.

It is an arithmetic number, because the mean of its divisors is an integer number (35617526376).

Almost surely, 2^189956844074 is an apocalyptic number.

189956844074 is a deficient number, since it is larger than the sum of its proper divisors (94983366934).

189956844074 is a wasteful number, since it uses less digits than its factorization.

189956844074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648300.

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 189956844074 in words is "one hundred eighty-nine billion, nine hundred fifty-six million, eight hundred forty-four thousand, seventy-four".