189379243 has 2 divisors, whose sum is σ = 189379244. Its totient is φ = 189379242.

The previous prime is 189379237. The next prime is 189379259. The reversal of 189379243 is 342973981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189379243 - 2¹³ = 189371051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189379193 and 189379202.

It is not a weakly prime, because it can be changed into another prime (189979243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94689621 + 94689622.

It is an arithmetic number, because the mean of its divisors is an integer number (94689622).

Almost surely, 2^189379243 is an apocalyptic number.

189379243 is a deficient number, since it is larger than the sum of its proper divisors (1).

189379243 is an equidigital number, since it uses as much as digits as its factorization.

189379243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 189379243 is about 13761.5131072132. The cubic root of 189379243 is about 574.2629426976.

The spelling of 189379243 in words is "one hundred eighty-nine million, three hundred seventy-nine thousand, two hundred forty-three".