189295087 has 2 divisors, whose sum is σ = 189295088. Its totient is φ = 189295086.

The previous prime is 189295061. The next prime is 189295097. The reversal of 189295087 is 780592981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189295087 - 2¹⁵ = 189262319 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189295087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189295027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94647543 + 94647544.

It is an arithmetic number, because the mean of its divisors is an integer number (94647544).

Almost surely, 2^189295087 is an apocalyptic number.

189295087 is a deficient number, since it is larger than the sum of its proper divisors (1).

189295087 is an equidigital number, since it uses as much as digits as its factorization.

189295087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 189295087 is about 13758.4551094954. The cubic root of 189295087 is about 574.1778667907.

The spelling of 189295087 in words is "one hundred eighty-nine million, two hundred ninety-five thousand, eighty-seven".