189356378 has 8 divisors (see below), whose sum is σ = 296383968. Its totient is φ = 90561724.

The previous prime is 189356357. The next prime is 189356381. The reversal of 189356378 is 873653981.

It is a happy number.

189356378 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2058176 + ... + 2058267.

It is an arithmetic number, because the mean of its divisors is an integer number (37047996).

Almost surely, 2^189356378 is an apocalyptic number.

189356378 is a deficient number, since it is larger than the sum of its proper divisors (107027590).

189356378 is a wasteful number, since it uses less digits than its factorization.

189356378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116468.

The product of its digits is 1088640, while the sum is 50.

The square root of 189356378 is about 13760.6823231989. The cubic root of 189356378 is about 574.2398302550.

The spelling of 189356378 in words is "one hundred eighty-nine million, three hundred fifty-six thousand, three hundred seventy-eight".