189177379 has 2 divisors, whose sum is σ = 189177380. Its totient is φ = 189177378.

The previous prime is 189177301. The next prime is 189177431. The reversal of 189177379 is 973771981.

189177379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (189177431) can be obtained adding 189177379 to its sum of digits (52).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189177379 - 2¹¹ = 189175331 is a prime.

It is not a weakly prime, because it can be changed into another prime (189177979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94588689 + 94588690.

It is an arithmetic number, because the mean of its divisors is an integer number (94588690).

Almost surely, 2^189177379 is an apocalyptic number.

189177379 is a deficient number, since it is larger than the sum of its proper divisors (1).

189177379 is an equidigital number, since it uses as much as digits as its factorization.

189177379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 52.

The square root of 189177379 is about 13754.1767837992. The cubic root of 189177379 is about 574.0588298187.

The spelling of 189177379 in words is "one hundred eighty-nine million, one hundred seventy-seven thousand, three hundred seventy-nine".