189400769378 has 8 divisors (see below), whose sum is σ = 293265707520. Its totient is φ = 91645533540.

The previous prime is 189400769353. The next prime is 189400769399. The reversal of 189400769378 is 873967004981.

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

It is a Harshad number since it is a multiple of its sum of digits (62), and also a Moran number because the ratio is a prime number: 3054851119 = 189400769378 / (1 + 8 + 9 + 4 + 0 + 0 + 7 + 6 + 9 + 3 + 7 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 189400769378.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527425498 + ... + 1527425621.

It is an arithmetic number, because the mean of its divisors is an integer number (36658213440).

Almost surely, 2^189400769378 is an apocalyptic number.

189400769378 is a deficient number, since it is larger than the sum of its proper divisors (103864938142).

189400769378 is a wasteful number, since it uses less digits than its factorization.

189400769378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054851152.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 189400769378 in words is "one hundred eighty-nine billion, four hundred million, seven hundred sixty-nine thousand, three hundred seventy-eight".