189856274 has 4 divisors (see below), whose sum is σ = 284784414. Its totient is φ = 94928136.

The previous prime is 189856273. The next prime is 189856279. The reversal of 189856274 is 472658981.

189856274 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 167832025 + 22024249 = 12955^2 + 4693^2 .

It is not an unprimeable number, because it can be changed into a prime (189856273) 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 as a sum of consecutive naturals, namely, 47464067 + ... + 47464070.

Almost surely, 2^189856274 is an apocalyptic number.

189856274 is a deficient number, since it is larger than the sum of its proper divisors (94928140).

189856274 is an equidigital number, since it uses as much as digits as its factorization.

189856274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94928139.

The product of its digits is 967680, while the sum is 50.

The square root of 189856274 is about 13778.8342758014. The cubic root of 189856274 is about 574.7447123835.

The spelling of 189856274 in words is "one hundred eighty-nine million, eight hundred fifty-six thousand, two hundred seventy-four".